Classifications

• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
  • D06M17/00—Producing multi-layer textile fabrics
  • D06M17/04—Producing multi-layer textile fabrics by applying synthetic resins as adhesives
  • D06M17/06—Polymers of vinyl compounds
• • A—HUMAN NECESSITIES
  • A41—WEARING APPAREL
  • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
  • A41D27/00—Details of garments or of their making
  • A41D27/02—Linings
  • A41D27/06—Stiffening-pieces

Definitions

• the invention relates to a grid-shaped heat seal adhesive coating on fabrics, such as inserts for outer clothing, obtained from two superimposed layers by the powder printing process, and to processes for producing such a grid-shaped heat seal adhesive coating.
• the bonding of materials with a grid-shaped heat seal adhesive is known. This plays a special role in the bonding of textile materials and here in particular in the bonding of inserts with outer fabrics.
• the production of heat seal adhesive coatings in grid form is carried out in various ways in the case of textile structures. Powder printing processes, paste printing or screen printing process techniques, but also scattering processes can be listed as such processes. Depending on the type of process used, heat seal adhesives of different origins have been used.
• grid-shaped heat seal adhesive coatings of the type mentioned at the outset are available using PVC-based plastic by the powder printing process, which do not have the disadvantages mentioned above of conventional coatings by the screen printing process using PVC.
• the invention thus relates to grid-shaped hot-seal adhesive coatings on fabrics, and in particular on inserts for outer clothing, from two superimposed layers according to the powder printing process, which are characterized in that one of the two layers contains PVC, possibly with a proportion of plasticizer.
• PVC powders are suitable as homopolymers or copolymers for producing suitable PVC-containing layers.
• copolymers e.g. those made of vinyl chloride and vinyl esters are used.
• a PVC polymer composed of approximately 85% vinyl chloride and 15% vinyl acetate can be used with very good success in the coating according to the invention.
• the PVC powder (whereby PVC copolymers are also to be included in this term below) is used in a particle size between about 50 to 150 ⁇ m. It is advantageous and necessary for many applications to add a proportion of plasticizer to the PVC powder.
• the proportion of the plasticizer can vary depending on the type of PVC powder and the desired properties in the range from 20 to 70% by weight, based on the PVC proportion. As a rule, however, the proportion of the plasticizer is particularly advantageously around 35 to 55% by weight, based on the PVC proportion.
• Plasticizers for PVC are known.
• powdered plasticizers such as cyclohexyl phthalate, o-toluenesulfonic acid amide, p-toluenesulfonic acid amide and mixtures thereof, have been found to be particularly suitable, in each case in powder form.
• Plasticizing components that can only be used in a limited amount, such as acid waxes in powder form, are also suitable.
• the PVC-containing layer of the grid-shaped double coating can also have portions of (different from PVC) heat seal adhesive. These portions of heat seal adhesive can, which is particularly preferred, represent portions of the second layer, which acts as the primary adhesive layer.
• the proportions can also be so-called "foreign powder" made of copolyamide and / or copolyester, which are not identical to that of the second adhesive layer.
• a layer which is also referred to below as a barrier layer, with a high proportion of plasticized PVC, which is expediently above 70% by weight.
• the proportion of the plasticized PVC in the barrier layer can vary within a wide range, for example it can be between 10 to 90% by weight, and particularly advantageously 60 to 90% by weight.
• the second layer of the grid-shaped double coating which is applied by the powder printing process in the same operation, can be an adhesive layer made of copolyamide or copolyester or mixtures thereof. If necessary, small amounts of PVC can be added in individual cases, although this is not preferred.
• a preferred grid-shaped double coating has an upper layer made of copolyamide and / or copolyester and a lower layer made of 90 to 10% by weight of copolyamide and / or copolyester and 10 to 90% by weight of plasticized PVC.
• the PVC-containing layer of the double coating according to the invention can either be the underlayer on the substrate, which is preferred, but also depending on the type of bonding and the intended use of the adhesive substrate alternatively represent the top layer.
• As an upper layer it can be applied, for example, to transfer carrier materials, such as transfer papers, from where it is then transferred together with the lower layer to other flat structures, such as outer fabrics of clothing, in order to make them adhesive.
• the heat seal adhesive coating according to the invention can be applied from two layers lying one above the other in a manner known per se by the powder printing process.
• the preferred plasticizer-containing PVC powders especially when they are produced in a suitable form, can be knife-coated into the cavities of an engraving roller, for example as an upper layer, and can be removed therefrom without residue, so that they can be used as a lower layer on textile substrates, e.g. Deposits to be applied.
• the insert material provided with this coating shows the typical fixing properties of a duo coating.
• the grain fineness of the PVC-containing powders used if they are knife-coated into the cavities as the upper layer, is in the coarser range up to about 250 ⁇ m, whereas the powders for the lower layer are finer and with a grain fineness of less than approximately 150 ⁇ m are preferred.
• the grid arrangements with a distance greater than 15 mesh (e.g. 11 mesh) 150 by larger sizes also give favorable results, while with a closer grid spacing (e.g. 17 mesh, 23 mesh) grain sizes are also advantageous below 100 ⁇ m are appropriate.
• plasticizer is particularly advantageously introduced into the PVC-containing powder by means of a tempering process.
• the PVC-containing powder mixture is generally annealed in a temperature range between 50 and 80 ° C., together with plasticizer powder, until the plasticizer has diffused almost or completely homogeneously into the PVC grains. In this way, an almost molecularly homogeneous distribution of the plasticizer component within the PVC grain, which is particularly favorable, is achieved. Tempering times of 1 to 5 days are usually sufficient for this, the tempering being carried out at rest or with slight movement. After the tempering process, the powder in a hammer mill again easily breaks down into the grown primary grain, which, for example, starting from 150 ⁇ m starting grain, is in the grain range below approx. 200 to 250 ⁇ m.
• the PVC powder contains additional portions of heat seal adhesive, e.g. Copolyamide and / or copolyester, are introduced, the latter hot sealing adhesive powder can be mixed in shortly before the application, but also, if appropriate, when the softener is tempered.
• heat seal adhesive e.g. Copolyamide and / or copolyester
• stirrer in the second funnel, e.g. a stir bar, and a level control to control the weight ratio of the layers to each other and the total amount of coating within narrow limits.
• the PVC-containing barrier layer may also contain portions of heat seal adhesive. These portions of the heat seal adhesive can be the same as or different from that of the second adhesive layer.
• the second, actual adhesive layer normally advantageously contains no PVC powder.
• a suspension homopolymer with a particle size range of about 50 to 150 ⁇ m and a K value of 65 are mixed with the finely ground powders of 44 parts by weight of cyclohexyl phthalate, 10 parts by weight of a mixture of o- and p -Toluenesulfonic acid amide and 4 parts by weight of acid wax mixed and then annealed at 56 ° C for 72 hours in a sealed plastic bag. Approx. 8 days after cooling, the tempered material is broken up into a primary grain using a hammer mill and then sieved off using a 200 ⁇ m sieve. Any oversize is returned to the hammer mill and sieved again.
• the free-flowing powder is used for the heat seal adhesive coating of web-shaped interlining fabrics using the powder printing process with two layers lying one above the other and for this purpose it is knife-coated as a top layer in the cavities of a point-engraved printing roller (15 mesh).
• Copolyamide powder with a grain size of less than 150 ⁇ m is used for the lower layer of the engraving.
• the heating roller temperature is 190 ° C
• the engraving roller temperature is 30 ° C
• the coating speed is approx. 14 m / min.
• a rotating stirring rod is installed in the powder hopper, and the level of the powder inside the hopper is regulated.
• the coating weight is about 20 g / m 2 , of which 8 g / m 2 consist of plasticized PVC and 12 g / m 2 of copolyamide.
• the doctor blade thickness in the funnel with PVC filling is 0.3 mm.
• the squeegee edge is ground to 135 °.
• the PVC-containing top layer is used as the base layer and the copolyamide bottom layer as the primary adhesive layer.
• the insert cut out of the insert web is connected in the usual way to the outer fabrics by ironing. Good adhesion values of over 3,000 p / 15 cm are also achieved on heavily siliconized poplin. After cleaning the bracket assembly, neither the soft grip nor the adhesion has changed. No kickback is observed when ironing.
• a textile web is designated 1, on which a plasticized PVC layer 2 is seated as the lower layer, on which a second layer 3 of copolyamide or copolyester is seated.

Landscapes

• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Adhesives Or Adhesive Processes (AREA)
• Manufacturing Of Multi-Layer Textile Fabrics (AREA)
• Laminated Bodies (AREA)
• Adhesive Tapes (AREA)

Applications Claiming Priority (2)

Publications (3)

Family

ID=6086361

Family Applications (1)

Country Status (5)

Cited By (1)

Families Citing this family (5)

Family Cites Families (10)

• 1979
  • 1979-11-19 DE DE2946612A patent/DE2946612C2/de not_active Expired
  • 1979-12-21 AT AT0807479A patent/AT378209B/de not_active IP Right Cessation
  • 1979-12-28 JP JP17056879A patent/JPS5672068A/ja active Pending
• 1980
  • 1980-02-28 US US06/125,372 patent/US4326004A/en not_active Expired - Lifetime
  • 1980-11-17 EP EP80107113A patent/EP0029241B1/fr not_active Expired

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