WO2021031146A1 - Plancher à spc co-extrudé et son équipement de production - Google Patents

Plancher à spc co-extrudé et son équipement de production Download PDF

Info

Publication number
WO2021031146A1
WO2021031146A1 PCT/CN2019/101731 CN2019101731W WO2021031146A1 WO 2021031146 A1 WO2021031146 A1 WO 2021031146A1 CN 2019101731 W CN2019101731 W CN 2019101731W WO 2021031146 A1 WO2021031146 A1 WO 2021031146A1
Authority
WO
WIPO (PCT)
Prior art keywords
channel
layer
extruded
extrusion
spc floor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2019/101731
Other languages
English (en)
Chinese (zh)
Inventor
丁佳菲
戌颋靓
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Changxing Jingwei Bamboo Products Co Ltd
Original Assignee
Changxing Jingwei Bamboo Products Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Changxing Jingwei Bamboo Products Co Ltd filed Critical Changxing Jingwei Bamboo Products Co Ltd
Priority to PCT/CN2019/101731 priority Critical patent/WO2021031146A1/fr
Publication of WO2021031146A1 publication Critical patent/WO2021031146A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/305—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/02—Flooring or floor layers composed of a number of similar elements

Definitions

  • This application relates to the technical field of SPC flooring, in particular to a co-extruded SPC floor, and this application also relates to the production equipment of the co-extruded SPC floor.
  • SPC (Stone Plastic Composite) flooring is a new type of stone plastic flooring, which generally includes a substrate layer, a printing layer and a wear-resistant layer.
  • the SPC substrate is extruded by an extrusion device combined with a T-shaped extrusion head, using three rolls or four The roller calender heats the wear-resistant layer, the decorative paper (or color film) and the SPC base material at one time to heat and laminate and emboss them.
  • SPC floor has the advantages of environmental protection, good stability and high strength.
  • the performance of the single-layer extruded SPC substrate layer in the prior art is relatively simple, and it is difficult to achieve a balance between the two indexes of mechanical strength and flexibility, which means that the mechanical strength is high but the flexibility is weak, or the flexibility is good and the mechanical The strength is weak.
  • the single-layer extruded SPC floor will be bent and deformed in the length direction after a period of storage.
  • the thickness of the SPC floor is relatively thin (generally about 4-8mm). Therefore, although the SPC floor has bending deformation in the longitudinal direction during installation, the installation can still be barely completed by strong pressing. However, SPC floorboards still have a tendency to bend and deform, which can easily lead to the problem that the locks are out of lock.
  • the single-layer extruded SPC floor has a relatively short service life.
  • the first technical purpose of this application is to overcome the above technical problems, thereby providing a co-extruded SPC floor, which has relatively good stability in the width and length directions, can be quickly installed, and does not lock during use. The problem of disengagement from the lock, and has a relatively long service life.
  • the second technical purpose of this application is to provide production equipment for producing this kind of co-extruded SPC floor.
  • the first embodiment of the present invention provides a co-extruded SPC floor, which at least includes a substrate layer, a decorative layer covering the substrate layer, and the substrate layer From top to bottom, it includes an elastic layer, a reinforcement layer, and a correction layer formed by co-extrusion.
  • the thickness ratio of the elastic layer, the reinforcement layer, and the correction layer is 1: (3.0-3.5):1 .
  • the substrate layer is provided to include an elastic layer with different hardness, a reinforcement layer and a correction layer, and the three layers are formed by co-extrusion, so that the elastic layer has relatively good stability and can adapt to, Limit the size change of the reinforcement layer; the reinforcement layer has relatively large strength to meet the requirements of the mechanical strength of the SPC floor; the correction layer is used to cooperate with the elastic layer to form a symmetrical structure, and adapt and limit the strength of the reinforcement layer on the other side Size changes.
  • a relatively thicker reinforcement layer can be used to obtain relatively better stability and mechanical strength; in particular, the thickness ratio of the three is 1:(3.0 ⁇ 3.5):1.
  • the co-extruded SPC floor of the present application has relatively good stability in both the width and length directions, can be installed quickly, and does not cause the problem of lock detachment during use; on the other hand, through the elastic layer and correction The layer setting can obtain a relatively long service life.
  • the ratio of the hardness of the elastic layer, the reinforcing layer, and the correction layer is 1:(1.15-1.20):1.
  • the co-extrusion SPC floor further includes a silent layer, the silent layer is a PVC material layer, and the silent layer and the base material layer are bonded by co-extrusion.
  • the second embodiment of the present invention provides a production equipment for producing this kind of co-extruded SPC floor, which at least includes a first extrusion device, a second extrusion device, and a distributor , T-shaped extrusion head, the distributor includes a B material channel communicating with the first extrusion device, a first material A channel and a second material A channel communicating with the second extrusion device, and a sink Channel, the distributor further includes a first A material flow chamber communicating with the first A material channel, a second A material flow chamber communicating with the second A material channel, the first The A material flowing chamber and the second A material flowing chamber merge into a preforming channel, and the preforming channel is arranged around the B material channel.
  • the prior art SPC floor production equipment has a three-layer structure formed by co-extrusion with a T-shaped extrusion head.
  • the thickness of each layer is uneven, and an elastic layer appears.
  • the correction layer is thick in the middle and thin on both sides, or thin in the middle and thick on both sides.
  • the problem. Therefore, the manufactured SPC floor still has the problem of warpage and deformation after long-term storage.
  • the three-layer co-extrusion SPC floor production equipment in the prior art is mostly used to produce three-layer products with relatively similar thicknesses.
  • the elastic layer, reinforcement layer, and The thickness ratio of the three correction layers is in the range of 1:(1.5 ⁇ 2):1.
  • the thickness ratio of the elastic layer, the reinforcement layer, and the correction layer should be within the range of 1:(3.0 ⁇ 3.5):1.
  • material A flows from the first material A material chamber and the second material material chamber to the preforming channel, so that material A can be preformed before it merges with material B.
  • the prototype of the elastic layer is preformed above the prototype of the surrounding reinforcement layer, and the prototype of the correcting layer is preformed below the prototype of the surrounding reinforcement layer, and finally merged in the converging channel to form the prototype of the upper elastic layer,
  • the prototype of the lower correction layer surrounds the prototype of the reinforcement layer.
  • the thickness of the elastic layer, the enhancement layer, and the correction layer are in the length and width directions. It is uniform everywhere. Therefore, the problem of warpage and deformation after long-term storage can be effectively avoided.
  • the section where the B material channel is surrounded by the preformed channel is a flaring section
  • the slope of the inner wall of the flaring section is 0.13 to 0.25
  • the B material channel is in the flaring section The end of, and the preformed channel merge into the confluence channel.
  • the auxiliary material channels are usually gradually condensed, and finally combined with the main material channels.
  • the thickness of the three layers formed by co-extrusion will be uneven as described above.
  • the section where the B material channel and the pre-formed channel coexist in parallel is designed as a flaring section, which gradually expands the diameter of the B material channel, and finally merges with the pre-formed channel, thereby It can effectively avoid the uneven thickness of each layer of the three-layer structure formed by co-extrusion, and make the thickness of each layer structure equal everywhere.
  • the section where the material B channel is surrounded by the preformed channel is a flaring section, and the slopes of the inner walls of the upper and lower portions of the flaring section are 0.13-0.25.
  • the slope of the inner wall of the flared section is from 0.05 to 0.08, and the inner wall of the flared section naturally transitions between the upper part, the lower part, and both sides, so that the flow channel walls on both sides of the confluence channel are located in the cross section of the flared section Between the side wall and the inner side wall of the pre-formed channel.
  • a plurality of spacers are arranged in the preforming channel, and the plurality of spacers divide the flow channel of the preforming channel into a corresponding number of sub-channels.
  • the radial extension lines of the plurality of spacers all pass through the axis of the B material channel.
  • a pair of first A material distribution channels are formed on both sides of the first A material sag chamber respectively, and a pair of second A material is formed on both sides of the second A material sag chamber.
  • Material splitting channel; the first A material splitting channel and the second A material splitting channel converge at a splitting confluence table; the spacer has a gap at the entrance of the preformed channel, and a plurality of the sub-channels The gaps communicate with each other and communicate with the shunting and confluence station.
  • the auxiliary material flow chambers of different forms of dispensers (equivalent to the first A material flow chamber and the second A material flow chamber of this application) all adopt a rectangular structure.
  • the right-angle corners of the auxiliary material flow chamber are easy to form auxiliary material accumulation.
  • the technical solution of the present application by designing the first A material flowing chamber and the second A material flowing chamber to be shell-shaped, the problem of A material accumulation can be more effectively avoided.
  • the material A flowing from the first material A channel into the first material A flowing chamber, and the material A flowing from the second material A channel into the second material A flowing chamber are not directly from the first material A
  • the material flow chamber and the second material A material flow chamber flow into the preforming channel, but are divided to both sides, and flow into the first material A distribution channel and the second material A distribution channel on both sides, and the first A material distribution channel.
  • the material distribution channel merges with the second A material distribution channel from bottom to top, and then, from the openings on both sides of the preformed channel (diversion confluence table), and then through the sub-channel formed by the gap on the spacer
  • the prototype of the elastic layer is formed upwards and the prototype of the correction layer is formed downwards from both sides.
  • each sub-channel is formed by the gap on the spacer, and the material A flows from the relatively small gap to each sub-channel, which can ensure that the flow rate of the material A in each sub-channel is relatively the same during the same time period. Therefore, the problem of accumulation of A material in the first A material sag chamber or the second A material sag chamber is further avoided, and the formation of an elastic layer, a reinforcement layer, and a correction layer with uniform thickness can be more effectively promoted.
  • the first material A flowing chamber is in a shell shape and is flared from the outlet of the first material A channel to one side of the preformed channel;
  • the second material A The flow chamber is in a shell shape and is flared from the outlet of the second A material channel to one side of the preformed channel;
  • the first A material flow chamber, the second A material The flow chambers are communicated with each other through the material distributing ring platform and communicated with the preformed channel.
  • the distributor includes first to fifth assembly blocks, the B material channel is arranged through the first to fifth assembly blocks, the first A material channel and the second A material channel It is assembled by the first assembly block and the second assembly block, the first material A distribution channel and the second material A distribution channel are opened on the third assembly block, and the first material A The flow chamber and the second A material flow chamber are assembled by the second assembly block and the third assembly block, the pre-formed channel is formed on the third assembly block, and the confluence The channel runs through the fourth assembly block and the fifth assembly block.
  • the distributor further includes a C material channel and a C material preforming channel arranged half around the confluence channel, the C material channel being in communication with the C material preforming channel, and the C material preforming channel
  • the channel is in the shape of a constriction, and communicates and converges with the confluence channel at the constriction end.
  • the elastic layer, the reinforcement layer, and the correction layer can be extruded from the T-shaped extrusion head with uniform thickness through the distributor of the technical solution of the application, which overcomes the fact that the distributor can only be co-extruded to form a three-layer structure Technical barriers.
  • the C material is used to form the mute layer, which is formed together with the elastic layer, the reinforcement layer and the correction layer by co-extrusion, which can effectively prevent the mute layer and the correction layer from peeling after long-term use; at the same time, the mute layer in the prior art Layers, decorative layers and/or wear-resistant layers are hot-pressed and attached to the upper and lower surfaces of the substrate layer by a three-roll or four-roll calender. For each additional layer, the calender needs to be equipped with a pair The calender roller, therefore, when the silent layer is formed by co-extrusion, it can greatly reduce the occupied space of the SPC floor production equipment.
  • the base material layer is configured to include an elastic layer with different hardness, a reinforcing layer and a correction layer, and the three layers are formed by co-extrusion, so that the elastic layer has relatively good stability , And can adapt to and limit the size change of the reinforcement layer; the reinforcement layer has a relatively large strength to meet the requirements of the mechanical strength of the SPC floor; the correction layer is used to cooperate with the elastic layer to form a symmetrical structure and adapt to the other side , Limit the size change of the reinforcement layer.
  • the co-extruded SPC floor of the present application has relatively good stability in both the width and length directions, can be installed quickly, and does not cause the problem of lock detachment during use; on the other hand, through the elastic layer and the correction The layer setting can obtain a relatively long service life.
  • the material A flows from the first material A flow chamber and the second material A flow chamber to the pre-forming channel respectively, so that the material A and material B are combined before
  • the prototype of the elastic layer can be preformed above the prototype of the surrounding reinforcement layer in the preformed channel, and the prototype of the correction layer can be preformed under the prototype of the surrounding reinforcement layer, and finally merged in the confluence channel to form the upper elastic layer.
  • the thickness of the elastic layer, the enhancement layer, and the correction layer are in the length and width directions. It is uniform everywhere. Therefore, the problem of warpage and deformation after long-term storage can be effectively avoided.
  • the co-extruded SPC floor of the present application at least has the advantages of good stability and long service life.
  • the production equipment of the co-extruded SPC floor of the present application has at least the advantages of a three-layer or four-layer structure with uniform extrusion thickness of each layer .
  • Fig. 1 is a schematic structural diagram of a co-extruded SPC floor according to an embodiment of the present invention
  • Figure 2 is a schematic structural diagram of a co-extruded SPC floor production equipment according to an embodiment of the present invention
  • Fig. 3 is an exploded schematic diagram of the dispenser of the embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a structure of a third assembly block according to an embodiment of the present invention.
  • Figure 5 is a cross-sectional view of a third assembly block according to an embodiment of the present invention.
  • Fig. 6a is a schematic front view of the entrance of a preformed channel according to an embodiment of the present invention.
  • Figure 6b is a schematic front view of the outlet of the preformed channel according to the embodiment of the present invention.
  • FIG. 7 is a schematic diagram of another structure of the third group of assembly blocks according to the embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a first assembly block according to an embodiment of the present invention.
  • FIG. 9 is a schematic diagram of a structure of a second assembly block according to an embodiment of the present invention.
  • FIG. 10 is another schematic diagram of the structure of the fourth assembly block according to the embodiment of the present invention.
  • FIG. 11 is a schematic diagram of the structure of an extruded three-layer substrate layer in the first prior art
  • Figure 12 is a schematic diagram of a prior art distributor
  • FIG. 13 is a schematic diagram of the structure of a three-layer substrate layer extruded in the prior art
  • FIG. 14 is a schematic diagram of the structure of an extruded substrate layer according to an embodiment of the present invention.
  • the characteristic is that the base material layer 100 sequentially includes co-extrusion
  • the ratio of the thickness of the formed elastic layer 110, the reinforcement layer 120, the correction layer 130, the elastic layer 110, the reinforcement layer 120, and the correction layer 130 is 1:(3.0-3.5):1.
  • the thicknesses of the elastic layer 110, the reinforcement layer 120, and the correction layer 130 are 0.75 mm, 2.5 mm, and 0.75 mm, respectively.
  • the ratio of the hardness of the elastic layer 110, the reinforcing layer 120, and the correction layer 130 is 1:(1.15-1.20):1.
  • the substrate layer 100 is configured to include an elastic layer 110 with different hardness, a reinforcing layer 120, and a correction layer 130, and the three layers are formed by co-extrusion, so that the elastic layer 110 has relatively good stability , And can adapt to and limit the size change of the reinforcement layer 120; the reinforcement layer 120 has relatively large strength to meet the requirements of the mechanical strength of the SPC floor; the correction layer 130 is used to cooperate with the elastic layer 110 to form a symmetrical structure, The other side adapts and limits the size change of the reinforcement layer 120.
  • the co-extruded SPC floor of the present application has relatively good stability in both the width and length directions, can be installed quickly, and does not cause the problem of lock detachment during use; on the other hand, through the elastic layer 110 and The setting of the correction layer 130 can obtain a relatively long service life.
  • the silent layer 300 may also include a silent layer 300 under the base layer 100, the silent layer 300 is a PVC material layer, and the silent layer 300 and the base layer 100 are co-extrusion bonded.
  • a production equipment for producing this kind of co-extruded SPC floor includes a first extrusion device 400, a second extrusion device 500, a distributor 600, and a T-shaped extrusion head 700.
  • the first extrusion device 400, the second extrusion device 500, and the T-shaped extrusion head 700 can adopt any structure in the prior art.
  • the distributor 600 includes a B material channel 610 communicating with the first extrusion device 400, a first material A channel 621 and a second material A communicating with the second extrusion device 500.
  • material A is used to form the elastic layer 110 and the correction layer 130
  • material B is used to form the reinforcing layer 120.
  • the prior art SPC floor production equipment uses two types of distributors.
  • the prior art one is a new type of multi-layer co-extrusion distributor disclosed with reference to Chinese patent CN106827454B, combined with attached drawings 2 and 3 of the patent specification ,
  • the main material channel (equivalent to material B channel 610 of this application), auxiliary material channel (equivalent to material A channel 621 and 622 of this application) and confluence channel (equivalent to material channel 650 of this application) are all rectangular structures, and
  • the auxiliary material channel directly flows into the main material channel, and the elastic layer 110', the reinforcement layer 120', and the correction layer 130' of equal width are pre-formed, because the thickness of the reinforcement layer 120' is significantly larger than that of the elastic layer 110' and the correction layer 130' Therefore, refer to Figure 11 for the co-extrusion situation in the T-shaped extrusion head.
  • the prior art 2 distributor 600" is similar in principle to the first distributor 600'.
  • the auxiliary material channel directly flows into the main material channel. The difference is that it is preformed
  • the reinforcing layer 120" of equal thickness up and down and the left and right sides is semicircular, and the elastic layer 110" surrounding the reinforcing layer 120" on the upper half and the correction layer 130" surrounding the reinforcing layer 120" on the lower half are formed.
  • FIG 13 for the co-extrusion situation in the extrusion head. Therefore, both the situation shown in Figure 11 and the situation shown in Figure 13 will cause two problems: First, useless materials with a larger width are formed on both sides, and the rate of output in the width direction is low, resulting in material failure.
  • the thickness of the elastic layer 110', 110” and the correction layer 130', 130” in the two sides of the substrate layer 100', 100" is still greater than or less than the middle of the width The thickness of the part.
  • the A material flows from the first A material flowing chamber 631 and the second A material flowing chamber 632 to the preforming channel 640, so that before the A material is merged with the B material,
  • the embryonic shape of the upper elastic layer 110 and the embryonic shape of the lower correcting layer 130 surround the embryonic shape of the reinforcing layer 120.
  • the thickness of the elastic layer 110, the enhanced layer 120, and the correction layer 130 It is relatively uniform everywhere in the length and width directions. Therefore, the structure of the base material layer 100 finally extruded by the T-shaped extrusion head 700 in the SPC floor production equipment using the distributor of the present invention is shown in FIG. 14.
  • the dotted lines in Figs. 11, 13, and 14 are the cutting lines of the cutting device after the T-shaped extruding head 700.
  • the substrate layer 100 based on this kind of SPC production equipment can effectively avoid the problem of warpage and deformation after long-term storage.
  • the section where the B material channel 610 is surrounded by the preformed channel 640 is the flaring section 611, the slope of the inner wall of the flaring section 611 is 0.13 to 0.25, and the B material channel 610 is in the flaring section 611
  • the end of ⁇ and the preformed channel 640 merge into the confluence channel 650.
  • the slope of the inner wall of the flaring section 611 refers to the ratio of the increase in the radius to the length of the flaring section 611.
  • the section that coexists in parallel with the preformed channel 640 in the B material channel 610 is designed as a flaring section 611, and by keeping the flow channel diameter of the preformed channel 640 constant, expand the B material The flow channel diameter of the channel 610 finally merges with the pre-formed channel 640, which can effectively avoid the occurrence of the three layers formed by co-extrusion and the uneven thickness of each layer.
  • the section where the B material channel 610 is surrounded by the preformed channel 640 is a flaring section 611, and the slopes of the upper and lower inner walls of the flaring section 611 are 0.13-0.25 ,
  • the slope of the inner walls on both sides of the flaring section 611 is 0.05 ⁇ 0.08, and the inner wall of the flaring section 611 is a natural arc transition between the upper part, the lower part, and the two sides, so that the flow channel walls on both sides of the confluence channel 650 change from Seen from the cross section (that is, the outlet shape of the pre-forming channel 640) is located between the side wall at the entrance of the flaring section 611 and the inner side wall at the entrance of the pre-forming channel 640.
  • a plurality of spacers 641 are provided in the preformed channel 640 by welding, and the plurality of spacers 641 divide the flow channel of the preformed channel 640 into a corresponding number of sub-channels 642 .
  • the radial extension lines of the plurality of spacers 641 all pass through the axis of the B material channel 610.
  • the first material A flowing chamber 631 is in a shell shape and is flared from the exit of the first material A channel 621 to the side of the preformed channel 640.
  • the first material A flowing chamber 631 A pair of first A material distribution channels 633 are respectively extended on both sides of the A material;
  • the second A material flow chamber 632 is shell-shaped, and is flared from the outlet of the second A material channel 622 to the side of the preforming channel 640
  • the two sides of the second A material flowing chamber 632 respectively extend to form a pair of second A material distribution channels 634; the first A material distribution channels 633 and the second A material distribution channels 634 converge at the distribution confluence platform 635;
  • the piece 641 has a notch 643 at the entrance of the preformed channel 640, and a plurality of sub-channels 642 communicate with each other at the notch 643 and communicate with the branching and confluence station 635.
  • the prior art distributor In addition to the uneven distribution of the three layers, the prior art distributor also has the problem of accumulation of paste and A material.
  • paste refers to the situation where the whole piece cannot be discharged after working for a period of time; the accumulation of material A refers to the accumulation of material A in the distributor, resulting in the deterioration of uneven distribution. It takes a lot of time and energy to clean up each time due to the accumulation of paste or A material. It takes about 5 hours from equipment cooling, accumulation of auxiliary materials removal, equipment reinstallation, and reheating.
  • auxiliary material flow chambers of different forms of dispensers (equivalent to the first A material flow chamber 631 and the second A material flow chamber 632 of the present application ) Adopt a rectangular structure, therefore, it is easy to form auxiliary material accumulation at the right-angle corners of the rectangular A material flow chamber.
  • the problem of the paste is essentially caused by the accumulation of A material.
  • the problem of A material accumulation can be more effectively avoided.
  • the material A that flows into the first material A flow chamber 631 from the first material A channel 621 and the material A that flows into the second material A flow chamber 632 from the second material A channel 622 are not directly From the first A material flowing chamber 631 and the second A material flowing chamber 632, it flows into the preforming channel, but is divided to both sides, and flows into the first A material distribution channel 633 and the second A material distribution channel 633 and the second A material on both sides.
  • the shunt passage 634, and the first A material shunt passage 633 merges with the second A material shunt passage 634 from bottom to top, and then the openings on both sides of the preformed passage 640—the shunt confluence table 635, pass by
  • the entrance of the sub-channel formed by the notch 643 on the spacer 641 again forms the embryonic shape of the elastic layer 110 upwards and the embryonic shape of the correction layer 130 downwards from both sides.
  • the problem of accumulation of material A in the first material A material chamber 631 or the second material material chamber 632 is further avoided, and the formation of the elastic layer 110 and the reinforcing layer 120 with uniform thickness can be effectively promoted. , Correction layer 130.
  • the first A material flowing chamber 631 is shell-shaped, and is flared from the outlet of the first A material channel 621 to the side of the preformed channel 640 ;
  • the second A material flow chamber 632 is shell-shaped, and from the outlet of the second A material channel 622 to the side of the preform channel 640 is flared; the first A material flow chamber 631, the second A The material flow chambers 632 are communicated with each other through the material distribution ring platform, and communicated with the preformed channel 640.
  • the distributor 600 may be an integral structure, but for the sake of quick maintenance, it is preferably a split structure, which is arranged and assembled along the axial direction.
  • the first to fifth assembly blocks 661, 662, 663, 664, 665 are composed of the first to fifth assembly blocks 661, 662, 663, 664, and 665 which are fixed to each other by any installation method (for example, pin connection) in the prior art.
  • the B material channel 610 is arranged through the first to fifth assembly blocks 661, 662, 663, 664, 665, and the inlet of the B material channel 610 is circular; and in the first assembly block 661, it gradually expands, thereby forming a nearly oval in the second assembly block 662 Shape (with a pair of parallel top and bottom walls, and symmetrically arranged circular arc side walls) flow channel shape; a flaring section 611 is formed in the third assembly block 663, and in the flaring section 611 The end of the spool flows into the collecting channel 650.
  • the first material A channel 621 The flow direction of the second material A channel 622 turns in the second assembly block 662 and is parallel to the material B channel 610.
  • it enters the third assembly block 663 it flows into the first material flowing chamber 631 and the second material flowing respectively. Chamber 632.
  • the first A material flow chamber 631, the second A material flow chamber 632, the first material A distribution channel 633, and the second material A distribution channel 634 are opened on the second assembly block 662 and the third assembly block 663, Formed by the assembly of the two.
  • the pre-formed channel 640 is formed on the third assembly block 663, can penetrate the third assembly block 663, and close one end through cooperation with the second assembly block 662, or one end can penetrate the third assembly block 663.
  • One end of the preforming channel 640 is closed, and one end flows into the collecting channel 650.
  • the material A flows into the preforming channel 640 only through the branching and confluence table 635 of the first flowing chamber 631 and the second flowing chamber 632.
  • the preforming channel 640 is arranged on the third assembly block 663 around the B material channel 610.
  • the confluence channel 650 runs through the fourth assembly block 664 and the fifth assembly block 665 and is gradually gathered on the fifth assembly block 665 to form a circular outlet to facilitate assembly with the T-shaped extrusion head 700.
  • the distributor 600 penetrates the first to fifth assembly blocks 661, 662, 663, 664, 665 to have several (for example 4) electric heating pipe insertion slots for inserting the electric heating pipes into the distributor 600 to maintain the temperature in the distributor 600.
  • the distributor 600 of the present application further includes a C material channel 670 and a C material preform channel 680 arranged half-circumscribing the confluence channel 650.
  • the C material channel 670 and the C material preform channel 680 are both arranged in the first Four assembled blocks.
  • Material C is used to simultaneously extrude the silent layer, and material C is preferably PCV material.
  • the C material channel 670 is in communication with the C material preformed channel 680, and the C material preformed channel 680 is in a closed shape, and communicates with the confluence channel 650 at the end of the closed end.
  • Chinese Patent CN106827454B discloses a new type of multi-layer co-extrusion dispenser, which claims to be able to form a transparent layer (equivalent to a wear-resistant layer) on the surface of the three-layer structure through an outer flow channel.
  • a transparent layer equivalent to a wear-resistant layer
  • the thickness of the extruded three-layer structure is uneven. Therefore, the transparent layer extruded by the outer runner is on both sides of the width of the three-layer structure substrate It cannot be covered.
  • the elastic layer 110, the reinforcement layer 120, and the correction layer 130 can be extruded from the T-shaped extrusion head 700 with a uniform thickness through the distributor 600 of the technical solution of the application, thereby overcoming the fact that the distributor 600 can only Co-extrusion forms a technical barrier with a three-layer structure.
  • the C material is used to form the silent layer 140, which is formed together with the elastic layer 110, the reinforcement layer 120, and the deviation correction layer 130 by co-extrusion, so as to effectively prevent the silent layer 140 and the deviation correction layer 130 from peeling off after long-term use.
  • the silent layer 140, the decorative layer and/or the wear-resistant layer are all hot-pressed and attached to the upper and lower surfaces of the substrate layer by a three-roll or four-roll calender. Therefore, when the silent layer 140 is formed by co-extrusion, the rolling machine needs to be provided with a pair of rolling rollers, which can greatly reduce the occupied space of the SPC floor production equipment.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

La présente invention concerne un plancher à SPC co-extrudé et son équipement de production. Le plancher comprend au moins une couche de matériau de base, et une couche de décoration recouvrant la couche de matériau de base. La couche de matériau de base comprend séquentiellement, de haut en bas, une couche élastique, une couche de renforcement et une couche de rectification de déviation qui sont formées par coextrusion. Le rapport d'épaisseur de la couche élastique, de la couche de renforcement et de la couche de rectification d'écart est de 1 : (3,0-3,5) : 1. Une stabilité relativement bonne est obtenue dans les directions de la largeur et de la longueur, un montage rapide peut être exécuter, le problème de déverrouillage d'un système de verrouillage ne se produit pas pendant l'utilisation, et la durée de vie est relativement longue.
PCT/CN2019/101731 2019-08-21 2019-08-21 Plancher à spc co-extrudé et son équipement de production Ceased WO2021031146A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2019/101731 WO2021031146A1 (fr) 2019-08-21 2019-08-21 Plancher à spc co-extrudé et son équipement de production

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2019/101731 WO2021031146A1 (fr) 2019-08-21 2019-08-21 Plancher à spc co-extrudé et son équipement de production

Publications (1)

Publication Number Publication Date
WO2021031146A1 true WO2021031146A1 (fr) 2021-02-25

Family

ID=74659949

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/101731 Ceased WO2021031146A1 (fr) 2019-08-21 2019-08-21 Plancher à spc co-extrudé et son équipement de production

Country Status (1)

Country Link
WO (1) WO2021031146A1 (fr)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000213152A (ja) * 1999-01-27 2000-08-02 Sekisui Chem Co Ltd 合成樹脂製床材およびその製造方法
CN2880461Y (zh) * 2006-02-13 2007-03-21 汕头市金兴机械有限公司 共挤片材机的分配器
CN201416251Y (zh) * 2009-03-11 2010-03-03 杭州华海木业有限公司 热塑性树脂复合木地板
CN101852003A (zh) * 2009-04-02 2010-10-06 唐善学 一种具有弹性层的实木复合地板
WO2015173743A1 (fr) * 2014-05-13 2015-11-19 Berryalloc Nv Procédé de fabrication de panneaux de revêtement de sol et de revêtement mural
CN107718498A (zh) * 2017-11-24 2018-02-23 黄石高科塑胶模具有限公司 一种用于生产塑料共挤地板的挤出模具
CN208084908U (zh) * 2018-01-29 2018-11-13 青岛三益塑料机械有限公司 地板生产设备
CN208280532U (zh) * 2018-06-13 2018-12-25 李丽容 新型漆面防水spc地板
CN208844855U (zh) * 2018-09-03 2019-05-10 江苏尚珩达科技有限公司 一种转移印刷spc地板成品

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000213152A (ja) * 1999-01-27 2000-08-02 Sekisui Chem Co Ltd 合成樹脂製床材およびその製造方法
CN2880461Y (zh) * 2006-02-13 2007-03-21 汕头市金兴机械有限公司 共挤片材机的分配器
CN201416251Y (zh) * 2009-03-11 2010-03-03 杭州华海木业有限公司 热塑性树脂复合木地板
CN101852003A (zh) * 2009-04-02 2010-10-06 唐善学 一种具有弹性层的实木复合地板
WO2015173743A1 (fr) * 2014-05-13 2015-11-19 Berryalloc Nv Procédé de fabrication de panneaux de revêtement de sol et de revêtement mural
CN107718498A (zh) * 2017-11-24 2018-02-23 黄石高科塑胶模具有限公司 一种用于生产塑料共挤地板的挤出模具
CN208084908U (zh) * 2018-01-29 2018-11-13 青岛三益塑料机械有限公司 地板生产设备
CN208280532U (zh) * 2018-06-13 2018-12-25 李丽容 新型漆面防水spc地板
CN208844855U (zh) * 2018-09-03 2019-05-10 江苏尚珩达科技有限公司 一种转移印刷spc地板成品

Similar Documents

Publication Publication Date Title
US20250277376A1 (en) Method for preparing a foamed floor with wood texture
KR101548508B1 (ko) 강성과 결합력 향상을 위한 요철 연결형 마찰계수 감소용 이중벽 하수관의 제조방법
CN101219447A (zh) 具有平衡形状的挤出结构
CN201117370Y (zh) 双层共挤式橡胶生产线模头
NZ591629A (en) Die,system, and method for coextruding a plurality of fluid layers using forming stems and distribution plates
JP2011068119A (ja) タイヤトレッド押出用押出金型の多重プリフォーマダイ
CN210659096U (zh) 共挤spc地板及其生产设备
CN110424674B (zh) 共挤spc地板及其生产设备
CN105128309A (zh) 梯型中空阳光板的挤出模头
WO2021031146A1 (fr) Plancher à spc co-extrudé et son équipement de production
CN110435195A (zh) 一种asa/pvc多层瓦共挤生产线及生产方法
CN108544732B (zh) 带有增强涂层的双壁波纹管及其制造模具
CN102338249B (zh) 一种钢塑复合排水管及生产方法
JP2009029104A (ja) フィードブロック、積層樹脂フィルム又はシートの成形装置及び製造方法
CN216860543U (zh) 一种分料流道挤出模具结构
CN113668809B (zh) 一种夜光地板、制造模具及制备方法
CN109291394A (zh) Pe管材三层共挤螺旋模具及其进料分配方法
CN203650920U (zh) 表面复合层原料节约型中空模头芯棒
CN203004275U (zh) 多层复合中空板挤出模头
CN103587095B (zh) 挤出具有纵向木纹塑料型材的共挤模头
CN210415601U (zh) 一种asa/pvc多层瓦共挤生产线
TWI590941B (zh) Light guide plate manufacturing method
CN110722761A (zh) 一种多层内腔挤出模具
CN211763356U (zh) 一种多穴多层复合挤出模具
CN211054363U (zh) 双色防脱层玻纤增强镀锌钢骨架缠绕管的板带挤出模具

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19942014

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19942014

Country of ref document: EP

Kind code of ref document: A1