DECORATIVE FILM AND IN MODE DECORATION/FORMING PROCESS

• US 20110171440A1
• Filed: 01/14/2010
• Published: 07/14/2011
• Est. Priority Date: 01/14/2010
• Status: Abandoned Application

• Current Assignee: Entire Technology Co., Ltd.
• Original Assignee: Entire Technology Co., Ltd.
• Inventors: CHANG, JEN-HUAI, LIN, CHAO-YING, CHENG, YUNG-HSIUNG
• Application Number:
  US12/687,432
• Publication Number:
  US 20110171440A1
• Time in Patent Office: Days
• US Class Current: 428/212
• CPC Class Codes: B29C 45/14688 Coating articles provided with a decoration
• CPC Class Codes: B29C 45/14811 Multilayered articles B29C45/14827 takes precedence
• CPC Class Codes: B29K 2995/0026 Transparent
• CPC Class Codes: B32B 2038/0028 Stretching, elongating
• CPC Class Codes: B32B 2250/05 5 or more layers
• CPC Class Codes: B32B 2250/24 All layers being polymeric
• CPC Class Codes: B32B 2250/42 Alternating layers, e.g. ABAB(C), AABBAABB(C)
• CPC Class Codes: B32B 2274/00 Thermoplastic elastomer material thermoplastic elastomer fibres B32B2262/0215, thermoplastic elastomer particles B32B2264/0221, thermoplastic elastomer foam B32B2266/0292
• CPC Class Codes: B32B 2307/40 having particular optical properties light or UV resistant B32B2307/71
• CPC Class Codes: B32B 2307/402 Coloured
• CPC Class Codes: B32B 2307/409 Iridescent, pearlescent surface
• CPC Class Codes: B32B 2307/418 Refractive
• CPC Class Codes: B32B 2307/514 Oriented
• CPC Class Codes: B32B 2307/516 mono-axially
• CPC Class Codes: B32B 2307/518 bi-axially
• CPC Class Codes: B32B 2307/536 Hardness
• CPC Class Codes: B32B 2307/732 Dimensional properties
• CPC Class Codes: B32B 2451/00 Decorative or ornamental articles wall paper B32B2607/02
• CPC Class Codes: B32B 2551/00 Optical elements
• CPC Class Codes: B32B 27/08 of synthetic resin
• CPC Class Codes: B32B 27/302 : comprising aromatic vinyl (co)polymers, e.g. styrenic (co)polymers
• CPC Class Codes: B32B 27/308 : comprising acrylic (co)polymers
• CPC Class Codes: B32B 27/325 : comprising polycycloolefins
• CPC Class Codes: B32B 27/36 : comprising polyesters
• CPC Class Codes: B32B 27/365 : comprising polycarbonates
• CPC Class Codes: B32B 37/153 : at least one layer is extruded and immediately laminated while in semi-molten state
• CPC Class Codes: B32B 7/023 : Optical properties
• CPC Class Codes: B32B 7/03 : with respect to the orientation of features direction of fibres or filaments B32B5/12
• CPC Class Codes: B32B 7/12 : using interposed adhesives or interposed materials with bonding properties
• CPC Class Codes: G02B 5/287 : comprising at least one layer of organic material
• CPC Class Codes: G02B 5/305 : including organic materials, e.g. polymeric layers
• CPC Class Codes: Y10T 428/24942 : including components having same physical characteristic in differing degree

Abstract

A decorative film is provided. The decorative film comprises: a plastic substrate, comprising a surface, and a plurality of optical film layers, being formed by laminating optical film layers of at least two different materials onto the surface, wherein each of the optical film layers and another optical film layer are stretched in at least one direction to create a difference in refractive indices of no less than 0.1 between the optical film layers.

Claims

1. A decorative film, comprising:

a plastic substrate comprising a surface; and

a plurality of optical film layers, being formed by laminating optical film layers of at least two different materials onto the surface, wherein each of the optical film layers and another optical film layer are stretched in at least one direction to create a difference in refractive indices of no less than 0.1 between the optical film layers.

2. The decorative film according to claim 1, wherein a skin layer having a surface hardness of no less than H is disposed on the plurality of optical film layers.

3. The decorative film according to claim 1, wherein the plastic substrate is made of polyethylene terephthalate (PET), polycarbonate (PC), tri-acetyl cellulose (TAC), polymethylmethacrylate (PMMA), methylmethacrylate styrene (MS) or cyclic olefin copolymer (COC).

4. An In Mold Decoration/Forming (IMD) process, comprising the following steps of:

step 1;

providing a plastic substrate having an upper surface and a lower surface, a plurality of optical film layers made of at least two different materials, a skin layer and a plastic material;

step 2;

laminating the plurality of optical film layers made of the at least two different materials onto the upper surface of the plastic substrate, wherein each of the optical film layers and another optical film layer are stretched in at least one direction to create a difference in refractive indices of no less than 0.1 between the optical film layers;

step 3;

attaching the skin layer onto the upper surface of the plurality of optical film layers to form a decorative film;

step 4;

forming the decorative film into a predetermined shape; and

step 5;

injection molding the plastic material onto the lower surface of the decorative film of the predetermined shape.

5. The IMD process according to claim 4, wherein the plastic substrate is made of polyethylene terephthalate (PET), polycarbonate (PC), tri-acetyl cellulose (TAC), polymethylmethacrylate (PMMA), methylmethacrylate styrene (MS) or cyclic olefin copolymer (COC).

6. The IMD process according to claim 4, wherein, in the step 2, an ultraviolet (UV) curable adhesive is used to attach the plurality of optical film layers onto the upper surface of the plastic substrate.

7. The IMD process according to claim 4, wherein the plastic substrate, the plurality of optical film layers and the skin layer are integrally formed through co-extrusion.

8. The IMD process according to claim 4, wherein the skin layer has a surface hardness of at least H.

9. The IMD process according to claim 4, wherein the step 2 further comprises:

stretching the plurality of optical film layers at a temperature of 150°

C. in a machine direction (MD) and a transverse direction (TD) to obtain a shrinkage rate ranging from 0.8 to 1.2 of the plurality of optical film layers.

10. The IMD process according to claim 4, wherein, in the step 4, the decorative film is formed into the predetermined shape through baking at a high pressure or vacuum molding.