Appeal 2007-2030
Application 10/482,842
moved towards one another 25 and exercising of a
suitable compression pressure. One such glue is a melt
glue. If the one glue strand, e.g. 5, consists of a melt
glue, it is suitable that the other glue strand consist of a
glue which has such properties that the glue wets the
sleeve material and penetrates in between the fibres and
sets, for example, by drying. Such properties possess a
dispersion glue or PVA glue.
(Specification, 2:22-29).
2. Erkkila teaches a method and apparatus for end-to-end joining of paper
roll cores (Erkkila, col. 1, ll. 4-5).
3. Erkkila provides “the abutting core end surfaces ... or at least one of
them, is treated in a conventional manner with a glue of appropriate
grade such as latex dispersion glue.” (Erkkila, col. 4, ll. 30-33). Erkkila
thus discloses one type of glue that meets the limitations of the “second
glue” of the disputed claims.
4. Erkkila enables multiple joining operations, wherein a “previous joint
remains rigidly clamped within the clamp sleeve structure, whereby the
glue in the joint is given a sufficient time to set while the joint is
subjected to both an axially applied abutting force and a radially applied
compression that performs trueing of the joint shape.” (Erkkila, col. 4, ll.
41-47).
5. When required, the setting of the glue in the joint can be accelerated by
heating the jacket of the clamp sleeve assembly (Erkkila, col. 4, ll. 49-
51). Erkkila purports to “facilitate an essentially continuous operation by
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