US 2015/0164701 A1Published application

Method of Applying Bulk Glue for Nursing Pad Base Film to Four Corners of Sanitary Product Nursing Pad Base Film and Device Therefor

AssigneeBeijing Beishute Maternity & Child Articles Co., Ltd

InventorQiuhong Li

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Abstract

The invention discloses a method for applying large areas of glue used for a bottom film of an absorbent pad at the four corners of the bottom film of the absorbent pad of a health care article, comprising the following processes and steps: (a) gluing and conveying a release paper; (b) cutting the glued release paper; and (c) transferring an adhesive glue piece of the release paper. The invention also relates to a device for achieving the method for applying large areas of glue used for the bottom film of the absorbent pad at the four corners of the bottom film of the absorbent pad of the health care article. As to a glue piece applied on the bottom film of the absorbent pad of the invention, its peeling force may reach 20 N or more than 20 N; the width of the lump glue applied on the bottom film of the absorbent pad may reach 60 mm-450 mm; its length may reach 120 mm-1000 mm; and the normal production speed of the improved machine of the absorbent pad may reach 120-180 m/minute. The invention facilitates the absorbent pad not to be moved, draped and folded when in use and meets the market requirements of the industrialized production of the absorbent pad with large areas of glue.

Claims2

Dependent claims

A method for applying large areas of glue to four corners of a bottom film of an absorbent pad of a health care article, the method comprising:

(a) gluing and conveying a release paper:
providing a pair of rubber rollers which pull a release paper from a release paper roll, synchronizing a conveying speed of the release paper and a speed of a machine manufacturing the absorbent pad;
wherein the conveying speed of the release paper and the speed of the manufacturing machine are synchronized with an independent release paper unwinding motor controlled by a PLC and an inverter;
providing intermittent glue to the release paper by an automatically controlling glue gun;
wherein the glue is a hot melt glue with a higher use temperature between 160° C.-180° C.;
and then
conveying the glued release paper by conveying flat belt;
wherein a surface of the conveying flat belt has a plurality of vent holes, and wherein the conveying flat belt is connected with a negative pressure air pump;
(b) cutting the glued release paper:
conveying the glued release paper to a knife chisel and a knife roller which are rotated and cut the glued release paper;
wherein the knife chisel has a smooth surface which includes a high hardness material, wherein a diameter of the knife chisel is greater than that of the knife roller;
wherein the knife chisel includes suction holes uniformly arranged on the surface, and wherein the suction holes are connected to a negative pressure air pump;
the knife roller includes a release paper knife is fixed thereon by a knife holder;
an angle of the release paper knife is adjusted through the change of an angle of the knife holder;
wherein the release paper knife is a straight knife and fixed by a pair of the knife holders with 1° of angle;
and wherein the knife holder includes an upper knife holder and a lower knife holder;
and
(c) transferring an adhesive piece of glue lump of the release paper:
contacting the glue carried on the release paper and the bottom film of the absorbent pad;
compressing the glue between the release paper and the bottom film with a compressing roller which is preloaded by a spring and mounted on the surface of the knife chisel;
wherein the absorbent pad passes through a gap between the compressing roller and the knife chisel;
thereby firmly adhering the glue to the bottom film of the absorbent pad and completing the adhesion of the glued release paper and the bottom film of the absorbent pad;
wherein the compressing roller is a silicone roller.

20 more elements

A device for applying large areas of glue to four corners of a bottom film of an absorbent pad, the device comprising:

a pair of rubber rollers positioned to and adapted for pulling a release paper from a release paper roll and synchronizing a conveying speed of the release paper and a speed of a machine manufacturing an absorbent pad;
an automatically unwinding motor controlled by the PLC and the inverter, which facilitates the release paper roll to automatically uncoil with the production speed of the machine, and thus ensuring the release paper not to be pulled and fractured by the rubber roller;
an automatically controlling glue gun for intermittently gluing the release paper during a transport process;
conveying flat belt positioned between the pair of rubber rollers and a knife chisel and a knife roller, used for conveying the glued release paper to the next process, and having a plurality of vent holes on its surface;
a negative pressure air PUMP connected to the conveying flat belt;
a knife chisel and a knife roller used for rotating and cutting the glued release paper;
wherein the knife chisel includes a smooth surface comprised of a high hardness material, wherein a diameter of the knife chisel is greater than that of the knife roller;
wherein the knife chisel further includes suction holes uniformly arranged on the surface and connected to a negative pressure air pump;
wherein the knife roller includes a release paper knife is fixed on the knife roller by a knife holder;
wherein an angle of the release paper knife can be changed by changing an angle of the knife holder;
wherein the release paper knife is a straight knife and clamped and fixed by a pair of knife holders with 1° of angle;
and wherein the knife holder comprises an upper knife holder and a lower knife holder;
and
a compressing roller disposed on the knife chisel adapted to provide pressure to transfer the glue to the bottom film of the absorbent pad;
wherein the compressing roller is preloaded with force by a spring and mounted on the surface of the knife chisel;
and wherein the compressing roller is a silicone roller.

13 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/349,399Filed 16 Aug 2012
Published: 18 Jun 2015
Term ends: Not estimatedThe source records don’t support an estimate.

Classification21 codes

A61F 13/15804
Apparatus or processes for manufacturing: plant, e.g. involving several steps
B32B 37/0046
Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding: characterised by constructional aspects of the apparatus
B32B 37/1292
Application of adhesive: selectively, e.g. in stripes, in patterns
B32B 37/26
Characterised by the properties of the layers: with at least one layer which influences the bonding during the lamination process, e.g. release…