ES2071656T3 - Peliculas encogibles por calor. - Google Patents

Peliculas encogibles por calor.

Info

Publication number
ES2071656T3
ES2071656T3 ES89302636T ES89302636T ES2071656T3 ES 2071656 T3 ES2071656 T3 ES 2071656T3 ES 89302636 T ES89302636 T ES 89302636T ES 89302636 T ES89302636 T ES 89302636T ES 2071656 T3 ES2071656 T3 ES 2071656T3
Authority
ES
Spain
Prior art keywords
film
dose
roll
irradiation
heat shrinkable
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.)
Expired - Lifetime
Application number
ES89302636T
Other languages
English (en)
Inventor
Anthoney J Doheny
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.)
Kendall Co
Original Assignee
Kendall Co
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 Kendall Co filed Critical Kendall Co
Application granted granted Critical
Publication of ES2071656T3 publication Critical patent/ES2071656T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B29C61/00—Shaping by liberation of internal stresses; Making preforms having internal stresses; Apparatus therefor
    • B29C61/06—Making preforms having internal stresses, e.g. plastic memory
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
    • B29C43/24—Calendering
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/52—Heating or cooling
    • 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
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/005—Shaping by stretching, e.g. drawing through a die; Apparatus therefor characterised by the choice of materials
    • 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
    • B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
    • B29C71/04—After-treatment of articles without altering their shape; Apparatus therefor by wave energy or particle radiation, e.g. for curing or vulcanising preformed articles
    • 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
    • B29C2791/00—Shaping characteristics in general
    • B29C2791/001—Shaping in several steps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • B29K2023/0608—PE, i.e. polyethylene characterised by its density
    • B29K2023/0641—MDPE, i.e. medium density polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/08—Copolymers of ethylene
    • B29K2023/083—EVA, i.e. ethylene vinyl acetate copolymer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/24—Condition, form or state of moulded material or of the material to be shaped crosslinked or vulcanised
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0049—Heat shrinkable

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Laminated Bodies (AREA)
  • Wrappers (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)

Abstract

NUEVOS PROCESOS PARA PREPARAR UNA PELICULA TERMOENCOGIBLE FORMANDO PRIMERO UNA PELICULA POLIOLEFINICA SOBRE UNA CALANDRA DE TRES RODILLOS EN LA CUAL EL SEGUNDO Y EL TERCER RODILLOS GIRAN A, APROXIMADAMENTE, LA MISMA VELOCIDAD Y EL PRIMER RODILLO GIRA A UNA VELOCIDAD MENOR, SIENDO CALENTADO EL RODILLO SUPERIOR A UNA TEMPERATURA POR ENCIMA DEL PUNTO DE FUSION DEL MATERIAL POLIOLEFINICO, EL RODILLO MEDIO SIENDO CALENTADO A UNA TEMPERATURA ELEVADA POR DEBAJO DE SU PUNTO DE FUSION, Y EL RODILLO INFERIOR SE ENFRIA PROPORCIONALMENTE; TRAS ESTO, SE SOMETE UNA SUPERFICIE DE LA PELICULA RESULTANTE A UNA RADIACION PROCEDENTE DE UN HAZ DE ELECTRONES DE BAJA ENERGIA A UN VOLTAJE TAL QUE LA DOSIS DE RADIACION A MEDIO GROSOR DE LA PELICULA ES APROXIMADAMENTE MEDIA DOSIS EN LA SUPERFICIE IRRADIADA Y A UNA RELACION CORRIENTE/VELOCIDAD DE LA SUPERFICIE DE LA PELICULA TAL QUE LA DOSIS DE SUPERFICIE EFECTUE UNA DEGRADACION SUFICIENTE PARA IMPARTIR A DICHA PELICULA UN MODULO DEL 100% A 150 (GRADOS) C DE APROXIMADAMENTE 10 A 100 LIBRAS POR PULGADA CUADRADA, SI LA DOSIS EN TODO EL GROSOR DE LA PELICULA FUESE IGUAL A LA DOSIS DE LA SUPERFICIE; Y ENTONCES SE SOMETE LA SUPERFICIE OPUESTA DE LA PELICULA A LA RADIACION DE UN HAZ DE BAJA ENERGIA A UN VOLTAJE Y A UNA RELACION CORRIENTE/VELOCIDAD ESENCIALMENTE IGUAL AL DEL PASO PRECEDENTE, DE FORMA QUE EL MODULO DEL 100% A 150 (GRADOS) C DE LA PELICULA COMO UN TODO ES DE ALREDEDOR 10 A ALREDEDOR DE 100 LIBRAS POR PULGADA CUADRADA Y LA PELICULA SE CARACTERIZA POR ESTAR DEGRADADA UNIFORMEMENTE A TODO LO LARGO DE SU ESPESOR. EN EL DISEÑO PREFERIDO DEL INVENTO LA CAPA ADHESIVA CONOCIDA PUEDE APLICARSE PARA PROPORCIONAR UNA CINTA ADHESIVA TERMOENCOGIBLE.
ES89302636T 1988-03-18 1989-03-17 Peliculas encogibles por calor. Expired - Lifetime ES2071656T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US17017788A 1988-03-18 1988-03-18

Publications (1)

Publication Number Publication Date
ES2071656T3 true ES2071656T3 (es) 1995-07-01

Family

ID=22618873

Family Applications (1)

Application Number Title Priority Date Filing Date
ES89302636T Expired - Lifetime ES2071656T3 (es) 1988-03-18 1989-03-17 Peliculas encogibles por calor.

Country Status (7)

Country Link
EP (1) EP0333492B1 (es)
JP (1) JP2573684B2 (es)
AT (1) ATE122284T1 (es)
AU (1) AU614586B2 (es)
CA (1) CA1337288C (es)
DE (1) DE68922519T2 (es)
ES (1) ES2071656T3 (es)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6228314B1 (en) 1998-05-22 2001-05-08 E. I. Du Pont De Nemours And Company Multiple-pass irradiation of polyolefin films
JP6612917B2 (ja) * 2018-04-03 2019-11-27 旭化成株式会社 ポリエチレン系架橋シュリンクフィルム

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2631954A (en) * 1946-01-18 1953-03-17 Kendall & Co Polyethylene film and method of preparing same
US3022543A (en) * 1958-02-07 1962-02-27 Grace W R & Co Method of producing film having improved shrink energy
US3455337A (en) * 1966-10-31 1969-07-15 Raychem Corp Irradiated article
GB1454838A (en) * 1973-05-10 1976-11-03 Sumitomo Electric Industries Heat-shrinkable tubing
US4336212A (en) * 1977-10-11 1982-06-22 Asahi-Dow Limited Composition for drawn film, cold drawn film made of said composition and process for manufacture of said film
US4244900A (en) * 1979-03-26 1981-01-13 Owens-Illinois, Inc. Method for the continuous production of a co-extruded heat-shrinkable composite foamed resin sheet
DE3476980D1 (en) * 1983-03-23 1989-04-13 Toa Nenryo Kogyo Kk Oriented polyethylene film and method of manufacture

Also Published As

Publication number Publication date
DE68922519D1 (de) 1995-06-14
EP0333492B1 (en) 1995-05-10
ATE122284T1 (de) 1995-05-15
DE68922519T2 (de) 1995-09-21
JPH0214127A (ja) 1990-01-18
AU3148289A (en) 1989-09-21
AU614586B2 (en) 1991-09-05
EP0333492A2 (en) 1989-09-20
EP0333492A3 (en) 1992-01-08
JP2573684B2 (ja) 1997-01-22
CA1337288C (en) 1995-10-10

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