CA1181675A - Nonwoven fabric from a combination of thermoplastic netting and oriented film - Google Patents

Nonwoven fabric from a combination of thermoplastic netting and oriented film

Info

Publication number
CA1181675A
CA1181675A CA000409205A CA409205A CA1181675A CA 1181675 A CA1181675 A CA 1181675A CA 000409205 A CA000409205 A CA 000409205A CA 409205 A CA409205 A CA 409205A CA 1181675 A CA1181675 A CA 1181675A
Authority
CA
Canada
Prior art keywords
composite structure
netting
further characterized
polymer film
layer
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
Application number
CA000409205A
Other languages
French (fr)
Inventor
Alan D. Craig
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.)
Hercules LLC
Original Assignee
Hercules LLC
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
Priority claimed from US06/299,753 external-priority patent/US4348445A/en
Priority claimed from US06/299,710 external-priority patent/US4348444A/en
Application filed by Hercules LLC filed Critical Hercules LLC
Application granted granted Critical
Publication of CA1181675A publication Critical patent/CA1181675A/en
Expired 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
    • 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
    • B29C43/30—Making multilayered or multicoloured articles
    • B29C43/305—Making multilayered articles
    • 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
    • B32B27/08—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 of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D28/00—Producing nets or the like, e.g. meshes, lattices
    • 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
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • 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
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • 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
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
    • 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/16—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating
    • B32B37/20—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating involving the assembly of continuous webs only
    • B32B37/203—One or more of the layers being plastic
    • B32B37/206—Laminating a continuous layer between two continuous plastic layers
    • 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
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/0032—Ancillary operations in connection with laminating processes increasing porosity
    • 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
    • B32B2305/00—Condition, form or state of the layers or laminate
    • B32B2305/38—Meshes, lattices or nets
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/514—Oriented
    • 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
    • B32B2323/00—Polyalkenes
    • B32B2323/10—Polypropylene
    • 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/15—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state
    • B32B37/153—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state at least one layer is extruded and immediately laminated while in semi-molten state

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

NONWOVEN FABRIC FROM A COMBINATION OF THERMOPLASTIC
NETTING AND ORIENTED FILM

Abstract of the Disclosure A family of reinforced net structures which include ori-ented polypropylene netting with oriented propylene/l-butene copolymer film as an adhesive, and a process for making these nonwoven fabrics.

Claims (12)

THE EMBODIMENTS OF THE INVENTION IN WHICH AN EXCLUSIVE
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A reinforced composite structure comprising a layer of oriented polypropylene netting to which is bonded a thermoplastic polymer film, characterized in that the film consists of a random copolymer having between 7% and 30% l-butene and between 93% and 70% propylene, the copolymer having an intrinsic viscosity of between 1.1 and 4.0
2. A reinforced composite structure as claimed in Claim 1, further characterized in that a second layer of oriented polypropylene netting is bonded to the polymer film so that the said film is between the two layers of netting.
3. A reinforced composite structure as claimed in Claim 2, further characterized that each netting layer has main filaments extending in one direction and smaller connecting filaments extending in the opposite direction, and the netting layers are arranged so that the main filaments of one of the netting layers are essentially perpendicular to the main filaments of the other netting layer.
4. A composite structure as claimed in Claim 1, 2, or 3, further characterized in that the polymer film has a thickness between .25 and 4 mils.
5. A composite structure as claimed in Claim 1, 2, or 3, further characterized in that the polymer film is unoriented.
6. A composite structure as claimed in Claim 1, 2, or 3, further characterized in that the polymer film is biaxially oriented.
7. A process for making a composite structure comprising disposing a layer of thermoplastic polymer film in contact with a layer of oriented polypropylene netting and applying heat and pressure, characterized in that the film consists of the copolymer defined in Claim 1 and the temperature of heating is approximately 5 above the crystalline melting point of the copolymer and not more than 150 C.
8. A process for making a composite structure as claimed in Claim 7, further characterized in that the thermoplastic polymer film has a thickness between .25 and 4 mils.
9. A process for making a composite structure as claimed in Claim 7 or 8, further characterized in that the thermoplastic polymer film is unoriented.
10. A process for making a composite structure as claimed in Claim 7 or 8, further characterized in that the thermoplastic polymer film is biaxially oriented.
11. A composite structure as claimed in Claim 3, further characterized in that the first layer has a plurality of parallel continuous main filaments extending in a first direction, having a substantially uniform cross-section, and being substantially uniformly and continuously oriented, and a plurality of discontinuous parallel tie filaments extending in a second direction, the tie filaments interconnecting the main filaments and having no substantial portion thereof crossing over the main filaments, each of the tie filaments between each pair of adjacent main filaments having its longitudinal axis in the second direction in axial alignment with the longitudinal axis in the second direction of the adjacent tie filament.
12. The reinforced thermoplastic polymer sheet structure as claimed in claim 3 or 11 further characterized in that the average minimum dimension of each of the openings of the netting is between about 0.5 millimeters and 5 millimeters.
CA000409205A 1981-09-08 1982-08-11 Nonwoven fabric from a combination of thermoplastic netting and oriented film Expired CA1181675A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US299,753 1981-09-08
US06/299,753 US4348445A (en) 1981-09-08 1981-09-08 Reinforced film of a combination of thermoplastic netting and oriented film
US06/299,710 US4348444A (en) 1981-09-08 1981-09-08 Nonwoven fabric from a combination of thermoplastic netting and oriented film
US299,710 1981-09-08

Publications (1)

Publication Number Publication Date
CA1181675A true CA1181675A (en) 1985-01-29

Family

ID=26971362

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000409205A Expired CA1181675A (en) 1981-09-08 1982-08-11 Nonwoven fabric from a combination of thermoplastic netting and oriented film

Country Status (3)

Country Link
CA (1) CA1181675A (en)
FR (1) FR2512393B1 (en)
GB (1) GB2105654B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2401154T3 (en) * 2006-10-02 2013-04-17 Tenax S.P.A. Intermediate component for the manufacture of packaging, in particular for horticultural products and food products in general, with automatic packaging machines and producible packaging as well

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1704517A1 (en) * 1968-01-03 1971-01-28 Bemberg Ag Composite film with a reinforcing insert consisting of a lattice-shaped surface structure
SE404503B (en) * 1973-01-16 1978-10-09 Hercules Inc PROCEDURE FOR TRANSFORMING A THERMOPLASTIC FOIL TO A WIRE PRODUCT
DE2514105A1 (en) * 1975-03-29 1976-10-07 Hoechst Ag REINFORCED FILMS, PROCESS AND DEVICE FOR THEIR CONTINUOUS PRODUCTION
US4059713A (en) * 1975-09-05 1977-11-22 Netlon Limited Extruded plastics net or mesh structures

Also Published As

Publication number Publication date
GB2105654A (en) 1983-03-30
GB2105654B (en) 1985-02-13
FR2512393B1 (en) 1985-10-31
FR2512393A1 (en) 1983-03-11

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Legal Events

Date Code Title Description
MKEC Expiry (correction)
MKEX Expiry