Device and Means of Processing a Material by Means of an Ultrasonic Device

• US 20090133803A1
• Filed: 02/10/2006
• Published: 05/28/2009
• Est. Priority Date: 02/10/2006
• Status: Abandoned Application

• Current Assignee: SCA Hygiene Products AB (Essity AB)
• Original Assignee: SCA Hygiene Products AB (Essity AB)
• Inventors: Lehto, Marcus
• Application Number:
  US12/159,807
• Publication Number:
  US 20090133803A1
• Time in Patent Office: Days
• US Class Current: 156/73.100
• CPC Class Codes: A61F 13/15707 Mechanical treatment, e.g. notching, twisting, compressing, shaping
• CPC Class Codes: A61F 13/15739 Sealing, e.g. involving cutting
• CPC Class Codes: A61F 2013/53991 by ultrasonic method
• CPC Class Codes: B29C 65/086 using a rotary anvil
• CPC Class Codes: B29C 65/56 using mechanical means or mechanical connections, e.g. form-fits
• CPC Class Codes: B29C 66/0222 without removal of material, e.g. cleaning by air blowing or using brushes
• CPC Class Codes: B29C 66/1122 Single lap to lap joints, i.e. overlap joints B29C66/45, B29C66/472, B29C66/52272 take precedence
• CPC Class Codes: B29C 66/21 said joint lines being formed by a single dot or dash or by several dots or dashes, i.e. spot joining or spot welding
• CPC Class Codes: B29C 66/71 characterised by the composition of the plastics material of the parts to be joined welding bar compositions B29C65/125
• CPC Class Codes: B29C 66/727 being porous, e.g. foam
• CPC Class Codes: B29C 66/7294 Non woven mats, e.g. felt
• CPC Class Codes: B29C 66/73521 of different thickness, i.e. the thickness of one of the parts to be joined being different from the thickness of the other part
• CPC Class Codes: B29C 66/73921 characterised by the materials of both parts being thermoplastics
• CPC Class Codes: B29C 66/81433 being toothed, i.e. comprising several teeth or pins comprising a single tooth B29C66/81429, or being patterned
• CPC Class Codes: B29C 66/8242 Pneumatic or hydraulic drives using fluid pressure directly acting on the parts to be joined B29C66/8266
• CPC Class Codes: B29C 66/83411 Roller, cylinder or drum types B29C66/83431 takes precedence; rollers, cylinders or drums moving relative to and tangentially to the parts to be joined B29C66/8362
• CPC Class Codes: B29C 66/83413 cooperating rollers, cylinders or drums
• CPC Class Codes: B29C 66/83415 the contact angle between said rollers, cylinders or drums and said parts to be joined being a non-zero angle B29C66/83433 takes precedence
• CPC Class Codes: B29C 66/9221 by measuring the pressure, the force or the mechanical power
• CPC Class Codes: B29C 66/92445 by steps
• CPC Class Codes: B29C 66/92611 : by controlling or regulating the gap between the joining tools
• CPC Class Codes: B29K 2023/00 : Use of polyalkenes or derivatives thereof as moulding material
• CPC Class Codes: B29K 2023/04 : Polymers of ethylene
• CPC Class Codes: B29K 2023/06 : PE, i.e. polyethylene
• CPC Class Codes: B29K 2023/10 : Polymers of propylene
• CPC Class Codes: B29K 2023/12 : PP, i.e. polypropylene
• CPC Class Codes: B29K 2067/00 : Use of polyesters or derivatives thereof, as moulding material
• CPC Class Codes: B29K 2077/00 : Use of PA, i.e. polyamides, e.g. polyesteramides or derivatives thereof, as moulding material
• CPC Class Codes: B29K 2101/12 : Thermoplastic materials
• CPC Class Codes: B29K 2105/04 : cellular or porous
• CPC Class Codes: B29K 2105/0854 : in the form of a non-woven mat
• CPC Class Codes: B29K 2223/00 : Use of polyalkenes or derivatives thereof as reinforcement
• CPC Class Codes: B29L 2009/00 : Layered products
• CPC Class Codes: B29L 2031/4878 : Diapers, napkins
• CPC Class Codes: B32B 2305/20 : in the form of a non-woven mat
• CPC Class Codes: B32B 2310/028 : using vibration, e.g. sonic or ultrasonic
• CPC Class Codes: B32B 37/00 : Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
• CPC Class Codes: B32B 38/0012 : Mechanical treatment, e.g. roughening, deforming, stretching

Abstract

An arrangement for processing of a material including at least one layer of material by an ultrasonic device having an ultrasound horn arranged adjacent to an abutment, in conjunction with which a gap is defined between the aforementioned ultrasound horn and the aforementioned abutment, in conjunction with which the aforementioned ultrasonic device is arranged for the purpose of feeding the aforementioned material through the aforementioned gap. The arrangement includes a pre-compression unit for the mechanical compression of the aforementioned material before it is fed through the aforementioned gap.

Claims

1. An arrangement for processing of a material comprising at least one layer of material by an ultrasonic device, the arrangement comprising:

an ultrasound horn arranged adjacent to an abutment;

a gap is defined between the ultrasound horn and the abutment;

the ultrasonic device is arranged for the purpose of feeding the material through the gap; and

a pre-compression unit for the mechanical compression of the material before it is fed through the gap;

wherein the pre-compression unit comprises two pre-compression rollers at least one of which is provided with a pattern for embossing said material.

2. The arrangement according to claim 1, wherein the ultrasound horn is arranged in a stationary manner, in conjunction with which the material is fed through the gap.

3. The arrangement according to claim 1, wherein the ultrasonic device is arranged for processing of material of the nonwoven layer type, thermoplastic films, fibre material, or foam material intended for absorbent products.

4. The arrangement according to claim 1, wherein the two pre-compression rollers define a gap through which the material is fed during processing.

5. The arrangement according to claim 1, wherein the materials include two or more layers of material.

6. The arrangement according to claim 1, wherein the ultrasound horn and/or the abutment are so arranged as to be capable of displacement for adjustment of the size of the gap.

7. The arrangement according to claim 1, wherein the abutment consists of a rotating abutment roller.

8. The arrangement according to claim 1, wherein the ultrasonic device is arranged for processing in the form of ultrasonic welding of at least two layers of material to produce a laminate.

9. A method for processing of a material comprising at least one layer of material by an ultrasonic device comprising an ultrasound horn arranged adjacent to an abutment, in conjunction with which the method comprises feeding the material through a gap that is defined betweeen the ultrasound horn and the abutment, wherein the method also includes a mechanical pre-compression of the material before it is fed through the gap, and embossing said material by the pre-compression unit which is provided with two pre-compression rollers, at least one of which is provided with a pattern for said embossing.

10. The method according to claim 9, wherein the ultrasound horn is maintained stationary in relation to the material in conjunction with the feeding of the latter through the gap.

11. The method according to claim 9, wherein the method involves processing of material of nonwoven layer type, thermoplastic films, fibre material, or foam material intended for absorbent products.

12. The method according to claim 9, wherein the method involves feeding the material through a gap that is defined between the two pre-compression rollers, with the help of which the pre-compression is provided.

13. The method according to claim 9, wherein the ultrasound horn or the abutment are movably arranged to permit adjustment of the size of the gap.

14. The method according to claim 9, wherein the ultrasound horn and the abutment are movably arranged to permit adjustment of the size of the gap.