Method for manufacturing laminated leather and manufactured products thereof

• US 20040214027A1
• Filed: 04/24/2003
• Published: 10/28/2004
• Est. Priority Date: 04/24/2003
• Status: Abandoned Application

• Current Assignee: Jung-Ho Ko
• Original Assignee: Jung-Ho Ko
• Inventors: Ko, Jung-Ho
• Application Number:
  US10/421,809
• Publication Number:
  US 20040214027A1
• Time in Patent Office: Days
• US Class Current: 428/473
• CPC Class Codes: A63B 71/143 Baseball or hockey gloves
• CPC Class Codes: B32B 2307/558 Impact strength, toughness
• CPC Class Codes: B32B 2307/56 Damping, energy absorption
• CPC Class Codes: B32B 2307/724 Permeability to gases, adsorption
• CPC Class Codes: B32B 2317/08 Natural leather
• CPC Class Codes: B32B 2437/02 Gloves, shoes
• CPC Class Codes: B32B 37/02 characterised by a sequence of laminating steps, e.g. by adding new layers at consecutive laminating stations
• CPC Class Codes: B32B 37/12 characterised by using adhesives
• CPC Class Codes: B32B 37/20 involving the assembly of continuous webs only
• CPC Class Codes: B32B 38/105 on edges
• CPC Class Codes: B32B 5/245 another layer next to it being a foam layer
• CPC Class Codes: B32B 9/02 comprising animal or vegetable substances , e.g. cork, bamboo, starch
• CPC Class Codes: B32B 9/025 comprising leather
• CPC Class Codes: B32B 9/046 of foam
• CPC Class Codes: C14B 7/02 Composite leathers with one or more laminae of plastics material B32B
• CPC Class Codes: C14B 7/04 by cementing or pressing together leather pieces, strips or layers, Reinforcing or stiffening leather by means of reinforcing layers
• CPC Class Codes: C14C 11/003 using macromolecular compounds

Abstract

A method for manufacturing laminated leather and manufactured products thereof. First, an oil-based adhesive is applied on the bottom end of the shock-proofing material of the middle layer. Next, the shock-proofing material in the middle layer and the cloth material in the bottom layer will be heated for adhesive bonding at a temperature between 120 and 140 degrees using an upper roller of a roller set for adhesive bonding. Then, a first round of roll pressing for gradual adhesion will be done for 7 to 10 seconds to form a conjoined piece. Further, the oil-based adhesive is applied on the surface of shock-proofing material of middle layer of the conjoined piece. Finally, the middle layer of the conjoined piece and the skin layer on the upper layer will be done a second round of roll pressing for adhesive bonding to form laminated leather.

Claims

1. A method for manufacturing laminated leather, including the following steps:

(a) The oil-based adhesive is applied to the bottom face of breathable, flexible shock-proofing material of the roll-type middle layer by using the gluing roller wheel, as shown in FIG. 2.

(b) When the oil-based adhesive on the bottom face of the middle layer appears to be half dried, the middle layer and the roll-type cloth material of the bottom layer will go through the roller set, as shown in FIG. 2.

(c) The middle layer and the bottom layer are adhesive bonded together by the upper roller of the roller set, wherein the roller set has corresponding upper and lower rollers through a heating-up at a temperature between 120 and 140 degrees;

afterwards, a first round of roll pressing for gradual adhesion is performed on the two layers about 7 to 10 seconds to form a conjoined piece, as shown in FIG. 2.

(d) The oil-based adhesive will be applied on the face of breathable, flexible shock-proofing material of the middle layer of the conjoined piece by the gluing roller wheel.

(e) When the oil-based adhesive on the face of the middle layer appears to be half dried, the middle layer of the conjoined piece is bonded to the sheet-type skin layer, and then a second round of roll pressing for adhesive bonding (as shown in FIGS. 3 &

     4) is performed on the two layers to integrally form laminated leather so that its middle layer has breathable, flexible shock-proofing material, as shown in FIG. 5.

(f) The laminated leather is baking dried to get rid of unwanted moisture vapor and oil-based adhesives.

(g) Cutting and trimming the edge is done to meet the needed size of laminated leather, as shown in FIG. 6.

(h) Various leather products can be manufactured from the finish-cutting laminated leather according to different requirements. Referring to FIGS. 7 &

8, the invention utilizes a baseball glove and a shoe vamp as examples of leather products.

2. Materials for manufacturing laminated leather, including a cloth material of the bottom layer, a skin layer of the upper layer, and a breathable, flexible shock-proofing material of the middle layer;

besides, the three layers are integrally bonded.

3. The materials for manufacturing laminated leather as claimed in claim 2, wherein the cloth material can be any kind of comfortable cloth or fireproofing cloth.

4. The materials for manufacturing laminated leather as claimed in claim 2, wherein the shock-proofing material can be any kind of foaming material, rubber, or foaming resin.

5. The materials for manufacturing laminated leather as claimed in claim 2, wherein the skin layer can be any kind of cowhide, sheepskin, pigskin, or other leather.