Corrugated board-like sheet made of synthetic resin

• US 4,507,348 A
• Filed: 04/05/1983
• Issued: 03/26/1985
• Est. Priority Date: 08/29/1980
• Status: Expired due to Fees

• Current Assignee: Mitsui Petrochemical Industries, Ltd.
• Original Assignee: Mitsui Petrochemical Industries, Ltd.
• Inventors: Nakashima, Koji, Nagata, Michiaki
• Primary Examiner(s): Thibodeau, Paul J.
• Application Number:
  US06/481,016
• Time in Patent Office: 721 Days
• Field of Search: 428/182, 428/184, 428/186, 428/156, 428/192, 428/172, 428/121, 156/205, 156/208, 156/210, 108/901, 108/160, 108/51.1, 108/51.3, 248/346
• US Class Current: 428/172
• CPC Class Codes: B32B 2270/00 Resin or rubber layer containing a blend of at least two different polymers
• CPC Class Codes: B32B 2307/744 Non-slip, anti-slip
• CPC Class Codes: B32B 2553/00 Packaging equipment or accessories not otherwise provided for
• CPC Class Codes: B32B 27/08 of synthetic resin
• CPC Class Codes: B32B 27/32 comprising polyolefins comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30
• CPC Class Codes: B32B 3/28 characterised by a layer comprising a deformed thin sheet , i.e. the layer having its entire thickness deformed out of the plane, e.g. corrugated, crumpled B32B29/08 takes precedence
• CPC Class Codes: B65D 65/403 with at least one corrugated layer
• CPC Class Codes: B65D 65/406 with at least one layer provided with a relief other than corrugations
• CPC Class Codes: Y10S 108/901 Synthetic plastic industrial platform, e.g. pallet
• CPC Class Codes: Y10S 229/93 Fold detail
• CPC Class Codes: Y10S 229/939 Container made of corrugated paper or corrugated paperboard
• CPC Class Codes: Y10T 156/1025 to form undulated to corrugated sheet and securing to base with parts of shaped areas out of contact
• CPC Class Codes: Y10T 428/2419 Fold at edge
• CPC Class Codes: Y10T 428/24612 Composite web or sheet
• CPC Class Codes: Y10T 428/24694 Parallel corrugations
• CPC Class Codes: Y10T 428/24727 with planar component
• CPC Class Codes: Y10T 428/24777 Edge feature

Abstract

This invention relates to a corrugated board-like sheet made of a synthetic resin. More particularly, it relates to a corrugated board-like sheet made of a synthetic resin having a flap portion with hinge effect.

Claims

1. A corrugated board-like sheet made of a synthetic resin, comprising an interlining core and liners fused on both upper and lower sides of said core, having at least one flap portion provided continuous to said sheet through a bending portion in which the liners and the interlining core are compressed and fused into one continuous layer to provide a hinge effect.

2. A corrugated board-like sheet according to claim 1 having a plurality of flap portions.

3. A corrugated board-like sheet according to claim 1, wherein the top surface of said sheet is a non-slip surface.

4. A corrugated board-like sheet according to claim 3, wherein the non-slip structure is formed by a number of projections on the top surface.

5. A corrugated board-like sheet according to any of claims 1, 2, 3, 4, 6 or 7 wherein the liners and the interlining core are constituted of resin material selected from the group consisting of polyethylene, ethylene-propylene copolymers containing not more than 40 mole % of ethylene, and blends of polyethylene and polypropylene containing not more than 50% by weight of polyethylene.

6. A slip sheet for conveying cargoes comprising a corrugated board-like sheet made of synthetic resin, comprising an interlining core and liners fused to both upper and lower sides of said core, having at least one flap portion provided continuous to said sheet through a bending portion in which the liners and the interlining core are compressed and fused into one continuous layer to provide a hinge effect.

7. A protective material for a packaged product comprising a corrugated board-like sheet made of a synthetic resin, comprising an interlining core and liners fused on both upper and lower sides of said core, having at least one flap portion provided continuous to said sheet through a bending portion in which the liners and interlining core are compressed and fused into one continuous layer to provide a hinge effect.