Method for sequentially stretching zero strain stretch laminate

Details Method for sequentially stretching zero strain stretch laminate Method for sequentially stretching zero strain stretch laminate

1991-02-28

1992-09-01

Lowe, James

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Reshaping running or indefinite-length work

2642902, B29C 5504

Patent

active

051436795

ABSTRACT:
An improved method and apparatus for incrementally stretching "zero strain" stretch laminate webs to impart elasticity thereto in the direction of stretching, at least up to the point of initial stretching. The "zero strain" stretch laminate material is formed of at least two plies of material which are either intermittently or substantially continuously secured to one another along at least a portion of their coextensive surfaces while in a substantially untensioned ("zero strain") condition. One of the plies is stretchable and elastomeric, while the second ply is elongatable, but not necessarily elastomeric. The second ply will, upon stretching of the laminate, be at least to a degree permanently elongated so that, upon release of the applied tensile forces, it will not return to its original undistorted configuration. This results in z-direction bulking of the laminate web when the applied tension is released as well as subsequent elastic extensibility in the direction of initial stretching, at least up to the point of initial stretching. In a particularly preferred embodiment of the present invention, the mechanical stretching operation is carried out by passing said laminate web between multiple pairs of meshing corrugated rolls, each pair of rolls exhibiting a greater degree of meshing than the preceding pair, to sequentially stretch said web in stages. Sequentially stretching the web in the foregoing manner minimizes damage to the web.

REFERENCES:
patent: Re19494 (1935-03-01), Glidden et al.
patent: 375073 (1987-04-01), Kayser
patent: 1620162 (1927-03-01), Martin
patent: 2068456 (1937-01-01), Hooper
patent: 2075189 (1937-03-01), Galligan et al.
patent: 2077438 (1937-04-01), Rowe
patent: 2697678 (1954-12-01), Ness et al.
patent: 3025199 (1962-03-01), Harwood
patent: 3214323 (1965-10-01), Russell et al.
patent: 3255065 (1966-06-01), Wyckoff
patent: 3261903 (1966-07-01), Carr
patent: 3305911 (1967-02-01), Chapman et al.
patent: 3316136 (1967-04-01), Pufahl
patent: 3438106 (1969-04-01), Cohn et al.
patent: 3545054 (1970-12-01), Sando et al.
patent: 3574809 (1971-04-01), Fairbanks et al.
patent: 3575782 (1971-04-01), Hansen
patent: 3650882 (1972-03-01), Thomas
patent: 3655502 (1972-04-01), Yoshikawa
patent: 3687754 (1972-08-01), Stumpf
patent: 3687797 (1972-08-01), Wideman
patent: 3694815 (1972-10-01), Burger
patent: 3708361 (1973-01-01), Stumpf
patent: 3728203 (1973-04-01), Taylor
patent: 3791911 (1974-02-01), Yaeger et al.
patent: 3816228 (1974-06-01), Stumpf
patent: 3819401 (1974-06-01), Massengale et al.
patent: 3842832 (1974-10-01), Wideman et al.
patent: 3849526 (1974-11-01), Muller et al.
patent: 3860003 (1975-01-01), Buell
patent: 3949127 (1976-04-01), Ostermeier et al.
patent: 3949128 (1976-04-01), Ostermeier
patent: 3953566 (1976-04-01), Gore
patent: 3968287 (1976-07-01), Balk
patent: 3991250 (1976-11-01), Hartmann et al.
patent: 4048364 (1977-09-01), Harding et al.
patent: 4081301 (1978-03-01), Buell
patent: 4087226 (1978-05-01), Mercer
patent: 4107364 (1978-08-01), Sisson
patent: 4116892 (1978-09-01), Schwarz
patent: 4194041 (1980-03-01), Gore et al.
patent: 4209563 (1980-06-01), Sisson
patent: 4223059 (1980-09-01), Schwarz
patent: 4223063 (1980-09-01), Sabee
patent: 4239578 (1980-12-01), Gore
patent: 4251585 (1981-02-01), Schwarz
patent: 4277429 (1981-07-01), Okita
patent: 4297157 (1981-10-01), Van Vliet
patent: 4333782 (1982-06-01), Pieniak
patent: 4337771 (1982-07-01), Pieniak et al.
patent: 4342314 (1982-08-01), Radel et al.
patent: 4351872 (1982-09-01), Brosseau et al.
patent: 4368233 (1983-01-01), Barkis et al.
patent: 4368565 (1983-01-01), Schwarz
patent: 4414970 (1983-11-01), Berry
patent: 4418123 (1983-11-01), Bunnelle et al.
patent: 4443511 (1984-04-01), Worden et al.
patent: 4446189 (1984-05-01), Romanek
patent: 4464815 (1984-08-01), Canterino
patent: 4475971 (1984-10-01), Canterino
patent: 4517714 (1985-05-01), Sneed et al.
patent: 4525407 (1985-06-01), Ness
patent: 4543099 (1985-09-01), Bunnelle et al.
patent: 4556596 (1985-12-01), Meuli
patent: 4578133 (1986-03-01), Oshefsky et al.
patent: 4606964 (1986-08-01), Wideman
patent: 4629525 (1986-12-01), Rasmussen
patent: 4652322 (1987-03-01), Lim
patent: 4652487 (1987-03-01), Morman
patent: 4657802 (1987-04-01), Morman
patent: 4660261 (1987-04-01), Corbiere
patent: 4675016 (1987-06-01), Meuli et al.
patent: 4692368 (1987-09-01), Taylor et al.
patent: 4720415 (1988-01-01), VanderWielen et al.
patent: 4725473 (1988-02-01), VanGompel et al.
patent: 4741944 (1988-05-01), Jackson et al.
patent: 4813946 (1989-03-01), Sabee
patent: 4834741 (1989-05-01), Sabee
patent: 4857067 (1989-08-01), Wood et al.
patent: 4981747 (1991-01-01), Morman

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