US3856597A - Method and apparatus for producing pile fabric - Google Patents

Method and apparatus for producing pile fabric Download PDF

Info

Publication number
US3856597A
US3856597A US00353968A US35396873A US3856597A US 3856597 A US3856597 A US 3856597A US 00353968 A US00353968 A US 00353968A US 35396873 A US35396873 A US 35396873A US 3856597 A US3856597 A US 3856597A
Authority
US
United States
Prior art keywords
yarn
slats
roller
individual
pieces
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00353968A
Other languages
English (en)
Inventor
C Campman
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US3856597A publication Critical patent/US3856597A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
    • F28D9/0037—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the conduits for the other heat-exchange medium also being formed by paired plates touching each other
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H11/00—Non-woven pile fabrics
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H11/00—Non-woven pile fabrics
    • D04H11/04—Non-woven pile fabrics formed by zig-zag folding of a fleece or layer of staple fibres, filaments, or yarns, strengthened or consolidated at the folds
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/02—Fastening; Joining by using bonding materials; by embedding elements in particular materials
    • F28F2275/025—Fastening; Joining by using bonding materials; by embedding elements in particular materials by using adhesives
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
    • Y10T156/1062—Prior to assembly
    • Y10T156/1075—Prior to assembly of plural laminae from single stock and assembling to each other or to additional lamina
    • Y10T156/1077—Applying plural cut laminae to single face of additional lamina
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1089—Methods of surface bonding and/or assembly therefor of discrete laminae to single face of additional lamina
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/12—Surface bonding means and/or assembly means with cutting, punching, piercing, severing or tearing
    • Y10T156/1317—Means feeding plural workpieces to be joined
    • Y10T156/1322—Severing before bonding or assembling of parts
    • Y10T156/133—Delivering cut part to indefinite or running length web

Definitions

  • Lengths of yarn of about twice the pile height are cut off from supply rolls and then folded in half about the slats of a roller carrying such slats in peripherally spaced relationship.
  • the roller is incrementally r0- tated in contact with a supply of backing material advanced in step with said roller, and to which the fold zones of the yarns are successively bonded.
  • Means are provided for holding pieces of yarn on a slat and folding them in half upon it.
  • a rotary roller provided with slat-like members spaced about its periphery. Yarn is supplied from supply rolls and passed to the slat-like members, at which folding means fold portions of the yarn around and between the slat-like members.
  • a carpet backing material is supplied to move along with the other circumference of the roller together with an adhesive and is pressed against the fold zone of the yarn portions folded around the slatlike members whereby the backing and the pile yarns are bonded together.
  • the piles form interconnected loops, so that the carpet has the appearance of a looped fabric with ribs of loops.
  • a method for making a pile fabric in which the pile consists of pile yarns bonded to a backing material, said pile yarns being portions of yarns supplied by feeding means from a plurality of supply rolls to a rotatable roller provided with peripherally spaced slats, and in which said yarn portions are folded about the slats by folding means, said backing material is fed along with the circumference of said roller and pressed together with adhesive against the fold zone of the yarn portions folded about said slats to effect bonding between said backing and said pile yarns, characterized by the improvement which consists in first cutting said yarn portions from said yarns and then folding them about said slats.
  • an apparatus for use in producing a pile fabric comprising a rotatable roller having peripherally spaced slats, feeding means for feeding yarns from supply rolls to said roller, folding means for repeatedly folding yarn portions about a slat, transport means for supplying a backing material against the circumference of said roller and for causing said backing to run along with said circumference, and characterized by cutting means arranged to cut yarn portions from the leading ends of said yarns and a fork member arranged for reciprocating movement towards and away from said roller for its two fork legs to engage on opposite sides of a slat, there being arranged between said fork legs a clamping member reciprocable under a spring load relatively to said fork member to clamp the cutoff yarn portions on the upper edge of the respective slats during the reciprocating movement of said fork member.
  • FIG. I is a schematic sideview of a first embodiment of an apparatus according to the invention.
  • FIG. 2 illustrates part of the showing of FIG. I, but depicts the vital parts of the apparatus in a different position
  • FIG. 3 is an axial cross-section of the folding and clamping means shown in FIG. 1 and 2, but on a larger scale;
  • FIG. 4 is a bottom view according to the arrow IV of FIG. 3;
  • FIG. 5-8 illustrate schematically a second embodiment of the apparatus according to the invention, showing its vital parts insuccessive stages of operation.
  • roller 1 provided with upright slat-like members 2, hereinafter referred to as slats.
  • Roller 1 has a length at least equal to the breadth of a carpet 3 to be made, and is mounted for rotation in a frame (not shown).
  • a swivel shaft 4 Mounted in the same frame is a swivel shaft 4, extending likewise over the entire width of the frame and parallel to roller 1.
  • Shaft 4 carries at least one pair of tongs 6, which it can swivel back and forth over substantially 180. Independently of that movement, shaft 4 can perform a reciprocating lateral movement as indicated by double arrow
  • the yarn is passed through a yarn carrier 9, a passage opening 10 of which is provided with a clamping spring 11, which arrangement is well-known in the art.
  • a cutter 12 arranged between yarn carrier 9 and shaft 4 is a cutter 12, comprising a pair of blades between which the yarn is passed.
  • a yarn clamping and folding device 13 comprising a casing 14 in which a clamping die 16 is slidably arranged (also see FIG. 3 and 4).
  • a bifurcated member or fork 17 which together with casing 14 can be moved up and down as indicated by the double arrow 25.
  • the legs 18 of bifurcated member or fork 17 may consist of sheets extending over the entire length of roller 1, said legs 18 being spaced and dimensioned so that they can move on opposite sides along a slat 2.
  • Die 16 has a recess 34 at its bottom end, formed to slightly enclose the upper edge of a slat when coming into engagement with it.
  • shaft I9 Mounted for reciprocating rotation on the side of yarn clamping and folding device 13 away from shaft 4 is a shaft I9, which is likewise supported in the frame not shown, and like shaft 4 extends the full length of roller 1.
  • Shaft 19 carries a series of fingers 21, one end of which can be moved by shaft 19 into and out of engagement with the upper end of a slat 2.
  • a drum 23, supported in the frame not shown carries a roll of carpet backing 24, which via guide rollers 26 and 27 is guided against the outer circumference of roller l, the arrangement being such that backing 24 follows the intermittent movement of roller 1, at the same rate.
  • adhesive 31 is applied to the backing. by means of a dispenser 29. After leaving guide roller 27, backing 24, provided with pile yarns bonded thereto is rolled up on a drum 28.
  • Tongs 6 are now opened and device 13 is moved downwards (also see FIG. 3) for clamping die 16 to clamp the piece of yarn 33 on the upper edge of slat 32 with its recess 34.
  • the downward movement of device 13 is continued, whereby the legs 18 of fork 17 move on opposite sides along the slat, folding the ends of the piece of yarn 33 about slat 32.
  • clamping die 16 can move relatively to casing 14 against the action ofa helical spring 38.
  • die 16 is retained by slat 32 and clamps the fold zone of the piece of yarn 33 on to slat 32.
  • tongs 6 have been swiveled back into position for gripping a pile yarn 8.
  • Roller I is now rotated to bring the next slat under device 13, and the process is repeated as described.
  • a folded pile yarn has arrived in the position shown in FIG. 1, such as yarn 36 folded about slat 37
  • finger 21 is lowered on to the fold zone of yarn 36 to prevent the latter from being dislodged by leg 18 during its upward movement.
  • roller 1 rotates finger 21 is in a raised position.
  • Backing material 24 is provided with a layer of adhesive 31 when passing dispenser 29. This layer of adhesive is contacted with the fold zones of the pile yarns in the nip formed between the tops of the slats and roller 26. In the path between guide rollers 26 and 27 the adhesive is allowed to set, so that the pile is bonded to the backing, and the ready carpet can be wound on to drum 28 via guide roller 27.
  • FIG. 5-8 show a modified embodiment of the yarn clamping and folding means according to the invention.
  • the folding means comprises a single folding leg 41 movable up and down, and the clamping means is an element 42 extending tangentially to the circumference of roller 1 and movable back and forth in the tangential direction.
  • tongs 6 also perform the function of a clamping means, since the trailing end of the piece of yarn is being retained by tongs 6 during the folding operation.
  • tongs 6 When tongs 6 have moved a piece of yarn 33 over slat 32 theycontinue to hold the yarn while folding leg 41 is lowered to fold the leading end of the yarn (on the left in the drawing) against one side of slat 32. The yarn is then released by tongs 6; folding leg 41 is moved upwards to release slat 32 (FIG. 7); and roller 1 is rotated in increment equal to the distance between two adjacent slats. Element 42 is now moved to the right to maintain yarn 33 clamped on slat 32. Meanwhile tongs 6 have moved a next piece of yarn 39, cut to length, over slat 43(FIG. 7).
  • Folding leg 41 is again moved downwards and presses the overlapping ends of yarn 33 and 39 jointly into the interspace between slats 32 and 43 (FIG. 8). Subsequently folding leg 41 is moved upwards, element 42 is. moved to the left, roller 1 is rotated one increment further, and tongs 6 are swiveled clockwise in position to grip a new piece of yarn, whereafter the cycle is repeated.
  • the method of the present invention can be carried out in apparatus of the first embodiment hereinbefore described, but omitting die 16 and/or finger 21. This possibility depends on the nature of the pile material used, namely, if it has little tendency to become dislodged on a slat once it has been folded around it.
  • Apparatus for use in producing a pile fabric wherein the pile has a predetermined height comprising a roller rotated intermittently and having a plurality of peripherally located, spaced radially extending slats;
  • cutting means associated with said yarn supply means to cut off pieces of yarn, the length of each piece being equal to twice the pile height;
  • pivotal means capable of grasping the individual cut yarns and transporting said yarns by pivotal movement to said slats
  • said reciprocating means having leg means movable into said receiving area to fold center portions of individual yarn pieces respectively about ends of succeeding slats during a stationary part of said intermittent rotation;
  • movable holding means located adjacent said receiving area and adapted to contact the individual ends of said slats over which said individual yarn pieces have been folded, said contact taking place when said roller is stationary, and said holding means being mounted to be movable out of contact therewith when said roller is subjected to said intermittent rotation;
  • carpet'backin'g means located adjacent said roller and adapted to feed backing material into adhering association with said folded yarn pieces.
  • said movable holding means are defined as finger means that are pivotally mounted to be rotatable out of contact with the individual ends of said slats.
  • Method of making a pile fabric wherein the pile has a predetermined height comprising providing a continuous supply of yarn;
  • passing leg means between the slats in the receiving area to fold an individual yarn piece about one of the slats while simultaneously applying a holding pressure to an individual yarn piece previously folded about an adjacent slat while said roller is stationary;

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Looms (AREA)
  • Carpets (AREA)
  • Nonwoven Fabrics (AREA)
US00353968A 1972-04-27 1973-04-24 Method and apparatus for producing pile fabric Expired - Lifetime US3856597A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7205734A NL7205734A (US07902200-20110308-C00112.png) 1972-04-27 1972-04-27

Publications (1)

Publication Number Publication Date
US3856597A true US3856597A (en) 1974-12-24

Family

ID=19815935

Family Applications (1)

Application Number Title Priority Date Filing Date
US00353968A Expired - Lifetime US3856597A (en) 1972-04-27 1973-04-24 Method and apparatus for producing pile fabric

Country Status (16)

Country Link
US (1) US3856597A (US07902200-20110308-C00112.png)
JP (1) JPS4947667A (US07902200-20110308-C00112.png)
AT (2) AT345768B (US07902200-20110308-C00112.png)
BE (1) BE798490A (US07902200-20110308-C00112.png)
CA (1) CA979794A (US07902200-20110308-C00112.png)
CH (2) CH585773A4 (US07902200-20110308-C00112.png)
DE (1) DE2318991A1 (US07902200-20110308-C00112.png)
DK (1) DK138809B (US07902200-20110308-C00112.png)
ES (1) ES414132A1 (US07902200-20110308-C00112.png)
FR (1) FR2182139A1 (US07902200-20110308-C00112.png)
GB (1) GB1418336A (US07902200-20110308-C00112.png)
IE (1) IE37565B1 (US07902200-20110308-C00112.png)
LU (1) LU67474A1 (US07902200-20110308-C00112.png)
NL (1) NL7205734A (US07902200-20110308-C00112.png)
NO (1) NO137160C (US07902200-20110308-C00112.png)
SE (1) SE411462B (US07902200-20110308-C00112.png)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4421591A (en) * 1982-03-09 1983-12-20 Westvaco Corporation Veneer butt-end splicer
WO2013029121A1 (en) * 2011-08-26 2013-03-07 Cttec Bvba Method for manufacturing pile carpet

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1784552A (en) * 1929-02-23 1930-12-09 Lea Fabrics Inc Machine for production of pile fabrics
GB446267A (en) * 1934-09-26 1936-04-27 Cecil Charles Brinton Improvements in or relating to machines for making carpets and other tufted or piled products
US2116048A (en) * 1933-06-17 1938-05-03 Lea Fabrics Inc Method of making pile fabrics
US2588130A (en) * 1947-10-18 1952-03-04 Cecil G Lemon Method and apparatus for the manufacture of carpets
US3347731A (en) * 1963-01-10 1967-10-17 Tapijtfabriek Noordester N V Device for manufacturing pile products
US3387577A (en) * 1965-10-23 1968-06-11 Spanel Abram Nathaniel Mechanisms and methods for manufacturing carpets, rugs and the like

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1784552A (en) * 1929-02-23 1930-12-09 Lea Fabrics Inc Machine for production of pile fabrics
US2116048A (en) * 1933-06-17 1938-05-03 Lea Fabrics Inc Method of making pile fabrics
GB446267A (en) * 1934-09-26 1936-04-27 Cecil Charles Brinton Improvements in or relating to machines for making carpets and other tufted or piled products
US2588130A (en) * 1947-10-18 1952-03-04 Cecil G Lemon Method and apparatus for the manufacture of carpets
US3347731A (en) * 1963-01-10 1967-10-17 Tapijtfabriek Noordester N V Device for manufacturing pile products
US3387577A (en) * 1965-10-23 1968-06-11 Spanel Abram Nathaniel Mechanisms and methods for manufacturing carpets, rugs and the like

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4421591A (en) * 1982-03-09 1983-12-20 Westvaco Corporation Veneer butt-end splicer
WO2013029121A1 (en) * 2011-08-26 2013-03-07 Cttec Bvba Method for manufacturing pile carpet
BE1020203A5 (nl) * 2011-08-26 2013-06-04 Cttec Bvba Werkwijze voor het vervaardigen van pooltapijt.
US9556556B2 (en) 2011-08-26 2017-01-31 Cttec Bvba Method for manufacturing pile carpet
RU2609217C2 (ru) * 2011-08-26 2017-01-31 Кттек Бфба Способ изготовления ворсового ковра

Also Published As

Publication number Publication date
ATA346873A (de) 1978-02-15
GB1418336A (en) 1975-12-17
CA979794A (en) 1975-12-16
SE411462B (sv) 1979-12-27
CH585773A4 (US07902200-20110308-C00112.png) 1976-07-30
DK138809C (US07902200-20110308-C00112.png) 1979-04-30
CH586535B5 (US07902200-20110308-C00112.png) 1977-04-15
NO137160B (no) 1977-10-03
ATA508476A (de) 1978-04-15
IE37565L (en) 1973-10-27
NL7205734A (US07902200-20110308-C00112.png) 1973-10-30
ES414132A1 (es) 1976-02-01
JPS4947667A (US07902200-20110308-C00112.png) 1974-05-08
NO137160C (no) 1978-01-11
IE37565B1 (en) 1977-08-17
DK138809B (da) 1978-10-30
FR2182139A1 (US07902200-20110308-C00112.png) 1973-12-07
LU67474A1 (US07902200-20110308-C00112.png) 1973-07-06
AT346873B (de) 1978-02-15
AT345768B (de) 1978-10-10
DE2318991A1 (de) 1973-11-08
BE798490A (nl) 1973-10-19

Similar Documents

Publication Publication Date Title
US3257915A (en) Bag forming machine
US4825622A (en) Apparatus for selecting and feeding web material
US2976657A (en) Packaging with variations of package length
JPS5813339B2 (ja) 袋をピンに插入積み重ねる装置
US3856597A (en) Method and apparatus for producing pile fabric
US3784186A (en) Method of and apparatus for making pleated and folded articles from a web
US5018416A (en) Method of and apparatus for cutting pieces from an elongated textile web
US4011708A (en) Bag handling apparatus
US3122466A (en) Apparatus for continuously forming edge-united laminar articles
US4231558A (en) Apparatus for accumulating articles such as bags
US3796171A (en) Apparatus for processing textile materials in flat strips, such as bedding materials
US3856599A (en) Sealed edge cutting method
JPS6339417B2 (US07902200-20110308-C00112.png)
US4323409A (en) Apparatus and method for forming dielectrically sealed laminar sheet materials
JPS5924926B2 (ja) 包装装置
US5494275A (en) Cloth piece supply apparatus and method
US3816215A (en) Sealed edge machine
JPH0754097Y2 (ja) オーバーラップロール巻き袋の製造装置
US3703882A (en) Fabric handling apparatus
EP0093365A1 (en) Equipment for introducing into ironing machines small and medium sized linen articles coming from the washing
EP0301365B1 (en) Apparatus for manufacturing bags made of plastic material
US4343421A (en) Tensionless fabric feeding apparatus
US3901173A (en) Method of fabricating shirt cuffs
US3941645A (en) Carpet machine
US3165081A (en) Method for sheet seaming